The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A278263 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A278263

Least number with the same prime signature as the n-th term of EKG-sequence: a(n) = A046523(A064413(n)).
(history; published version)

#13 by Jon E. Schoenfield at Sat Sep 09 19:22:42 EDT 2017

STATUS

editing

approved

#12 by Jon E. Schoenfield at Sat Sep 09 19:22:39 EDT 2017

COMMENTS

This sequence works as a "sentinel" for EKG-sequence by matching to any sequence that is obtained as f(A064413(n)), where f(n) is any function that depends only on the prime signature of n (see the index entry for "sequences computed from exponents in ..."). The last line in Crossrefs- section lists such sequences that were present in the database as of Nov 11 2016.

STATUS

approved

editing

#11 by N. J. A. Sloane at Sat Nov 19 08:30:58 EST 2016

STATUS

proposed

approved

#10 by Antti Karttunen at Thu Nov 17 05:47:46 EST 2016

STATUS

editing

proposed

#9 by Antti Karttunen at Thu Nov 17 05:30:17 EST 2016

COMMENTS

This sequence works as a "sentinel" for EKG-sequence by matching to any sequence that is obtained as f(A064413(n)), where f(n) is any function that depends only on the prime signature of n (see the index entry for "sequences computed from exponents in ..."). The last line in Crossrefs-section lists such sequences that were present in the database as of Nov 11 2016.

This sequence works as a "sentinel" for EKG-sequence, by matching to any sequence that is obtained as f(A064413(n)), where f(n) is any function that depends only on the prime signature of n (see the index entry for "sequences computed from exponents in ..."). The last line in Crossrefs-section lists such sequences that were present in the database as of Nov 11 2016.

#8 by Antti Karttunen at Thu Nov 17 05:24:42 EST 2016

NAME

Least number with the same prime signature as the n-th in term of EKG-sequence: a(n) = A046523(A064413(n)).

#7 by Antti Karttunen at Thu Nov 17 05:23:23 EST 2016

NAME

Prime-Least number with the same prime signature sentinel for as the n-th in EKG-sequence: a(n) = A046523(A064413(n)).

COMMENTS

LINKS

<a href="/index/Eu#epf">Index entries for sequences computed from exponents in factorization of n</a>

CROSSREFS

Sequences that have equivalent partition N into same or coarser equivalence classes: A064742, A065203.

STATUS

proposed

editing

#6 by Antti Karttunen at Wed Nov 16 18:06:23 EST 2016

STATUS

editing

proposed

#5 by Antti Karttunen at Wed Nov 16 16:37:17 EST 2016

CROSSREFS

Sequences that have equivalent or coarser equivalence classes: A064742, A065203.

Discussion

Wed Nov 16

16:37

Antti Karttunen: With this worked just as wanted to: Two genuine matches, no false positives.

16:38

Antti Karttunen: (even though no dazzling surprises were found).

#4 by Antti Karttunen at Wed Nov 16 15:23:51 EST 2016

NAME

Prime-signature sentinel for EKG-sequence: a(n) = A046523(A064413(n)).