The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A035113 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A035113

Numbers != 2 (mod 4) listed in order of increasing totient function phi (A000010).
(history; published version)

#28 by N. J. A. Sloane at Wed Mar 09 16:29:38 EST 2022

STATUS

proposed

approved

#27 by Michel Marcus at Mon Feb 07 02:34:04 EST 2022

STATUS

editing

proposed

#26 by Michel Marcus at Mon Feb 07 02:34:00 EST 2022

CROSSREFS

Cf. A002181, A002202, A007614, A014197, A016825, , A032447, A058277.

#25 by Michel Marcus at Mon Feb 07 02:33:37 EST 2022

CROSSREFS

Cf. A000010, A035114.

Cf. A000010, A002181, A002202, A007614, A014197, A016825, A035114, , A032447, A058277.

STATUS

proposed

editing

#24 by Jon E. Schoenfield at Sun Feb 06 14:59:51 EST 2022

STATUS

editing

proposed

#23 by Jon E. Schoenfield at Sun Feb 06 14:55:49 EST 2022

AUTHOR

N. J. A. Sloane.

STATUS

proposed

editing

Discussion

Sun Feb 06

14:59

Jon E. Schoenfield: @Editors:  In the OEIS, I've seen notation like "a != b" for "a is not equal to b" and "a == b (mod c)" for "a is congruent to b modulo c".  Consistent with those (it seems to me), I've seen notation like "a !== b (mod c)" for "a is not congruent to b modulo c".  But I also see notation like what's used in the Name field here (with "!=" meaning "is not congruent to" rather than "is not equal to").  Is one notation for "is not congruent to" preferred?  Thanks!

#22 by Dumitru Damian at Sun Feb 06 13:35:53 EST 2022

STATUS

editing

proposed

#21 by Dumitru Damian at Sun Feb 06 13:35:39 EST 2022

PROG

(Python) from sympy import totient as phiA000010

def lovslov(n): return sorted([[phiA000010(n), n] for n in range(1, n) if n%4 != 2])

print([x[1] for x in lovslov(200)][:100]) # Dumitru Damian, Feb 01 2022

#20 by Michel Marcus at Tue Feb 01 10:30:17 EST 2022

LINKS

L. C. Washington L, <a href="https://doi.Corg/10. (1997) 1007/978-1-4612-1934-7_15">The Main Conjecture and Annihilation of Class Groups. </a>, In: Introduction to Cyclotomic Fields. , Graduate Texts in Mathematics, vol 83. (1997) Springer, New York, NY, <a href="https://doi.org/10.1007/978-1-4612-1934-7_15">p. 353</a>.

STATUS

proposed

editing

Discussion

Sat Feb 05

10:34

Dumitru Damian: Thank you for the edit. <br/> I have nothing extra to add for this seq. <br/> Do you wish to edit/delete? <br/> Yes for proposed?

#19 by Wesley Ivan Hurt at Tue Feb 01 10:27:57 EST 2022

STATUS

editing

proposed