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A332227 Odd numbers n such that sigma(n) is congruent to 2 modulo 8. 5
17, 41, 73, 89, 97, 113, 137, 153, 193, 233, 241, 257, 281, 313, 325, 337, 353, 369, 401, 409, 433, 449, 457, 521, 569, 577, 593, 601, 617, 641, 657, 673, 725, 761, 769, 801, 809, 833, 845, 857, 873, 881, 925, 929, 937, 953, 977, 1009, 1017, 1033, 1049, 1097, 1129, 1153, 1193, 1201, 1217, 1233, 1249, 1289, 1297, 1321 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..25000

Index entries for sequences related to sigma(n)

PROG

(PARI) isA332227(n) = ((n%2)&&2==(sigma(n)%8));

CROSSREFS

Cf. A000203.

Subsequence of A191218 and of A332226.

Cf. A332228 (a subsequence, terms that are not prime powers).

Sequence in context: A147215 A126790 A089200 * A263011 A263012 A172280

Adjacent sequences:  A332224 A332225 A332226 * A332228 A332229 A332230

KEYWORD

nonn

AUTHOR

Antti Karttunen, Feb 13 2020

STATUS

approved

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Last modified July 14 16:21 EDT 2020. Contains 335729 sequences. (Running on oeis4.)