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#100 by Michael De Vlieger at Sat Dec 17 20:01:59 EST 2022
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#99 by Michel Marcus at Sat Dec 17 14:26:53 EST 2022
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#98 by Michel Marcus at Fri Dec 16 01:23:26 EST 2022
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Discussion
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| Fri Dec 16
| 04:32
| Bernard Schott: Incorrect comment has been removed, all is okay now.
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#97 by Michel Marcus at Fri Dec 16 01:23:22 EST 2022
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| EXTENSIONS
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WrongIncorrect formulascomments removed by Michel Marcus, Dec 15 2022
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| STATUS
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proposed
editing
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#96 by Michel Marcus at Fri Dec 16 01:13:00 EST 2022
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#95 by Michel Marcus at Fri Dec 16 01:12:54 EST 2022
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| FORMULA
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A002326((a(n)-1)/2) = n iff n is odd or n is even such that a(n/2) != a(n). - Thomas Ordowski, Jan 11 2014
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| CROSSREFS
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Cf. A337431 (a(n)=a(2n)), A359063 (a(n)=a(2n)=a(4n)).)), A359088.
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| EXTENSIONS
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Wrong formulaformulas removed by Michel Marcus, Dec 15 2022
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| STATUS
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proposed
editing
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#94 by Michel Marcus at Thu Dec 15 10:19:26 EST 2022
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Discussion
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| Thu Dec 15
| 12:05
| Bernard Schott: Other comments in formula section are ok.
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| 12:31
| Michel Marcus: A002326 comment fails for odd n=51,111, 327
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| 13:05
| Bernard Schott: Or, maybe, create a sequence with odd numbers that fail relation with A002326 (?)
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| 14:26
| Michel Marcus: yes ...
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| 14:59
| Bernard Schott: Oui, je comprends.
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| 17:14
| Michel Marcus: I am stuck at 487 ...
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| 17:40
| Bernard Schott: Bravo, you have got some terms. The same as 05:01, if it is interesting, creation of this new sequence with a comment here (?), otherwise as your sugestion at 09:47, remove (?). In all cases, you have (again) done good job, with these two formulas.
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#93 by Michel Marcus at Thu Dec 15 10:19:14 EST 2022
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Discussion
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| Thu Dec 15
| 10:19
| Michel Marcus: other suggestions ?
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#92 by Michel Marcus at Thu Dec 15 05:56:50 EST 2022
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Discussion
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| Thu Dec 15
| 06:00
| Bernard Schott: Yes, super.
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| 06:56
| Michel Marcus: I wonder if we should also replace 2nd formula with a new sequence A002326((a(n)-1)/2) and add Thomas comment (iff n is odd or n is even ... ) there
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| 09:26
| Bernard Schott: Yes, also.
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| 09:47
| Michel Marcus: Unfortunately Thomas Ordowski A002326 comment fails for odd n=51 and 111; what should we do ??? (keep and warn) or remove ?
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| 09:56
| Bernard Schott: Ah! Maybe remove as comment of formula fails for these two odd integers.
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#91 by Michel Marcus at Thu Dec 15 05:56:27 EST 2022
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| FORMULA
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From _a(n) = a(2n) iff a(n) > A002587(n). See A337431. - _Thomas Ordowski_, Jan 07 2014: (Start)
a(n) = a(2n) iff a(n) > A002587(n).
a(n) = a(2n) = a(4n) iff n is prime p == +-1 (mod 8) and 2^p-1 is prime. (End)
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| CROSSREFS
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Cf. A337431 (a(n)=a(2n)), A359063 (a(n)=a(2n)=a(4n)).
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| EXTENSIONS
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Wrong formula removed by Michel Marcus, Dec 15 2022
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| STATUS
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proposed
editing
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Discussion
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| Thu Dec 15
| 05:56
| Michel Marcus: ok like this ?
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