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A055678 Integers not congruent to 0 (mod 6) that are divisible by the number of their divisors. 1
1, 2, 8, 9, 40, 56, 80, 88, 104, 128, 136, 152, 184, 225, 232, 248, 296, 328, 344, 376, 424, 441, 448, 472, 488, 536, 560, 568, 584, 625, 632, 640, 664, 712, 776, 808, 824, 856, 872, 880, 896, 904, 1016, 1040, 1048, 1089, 1096, 1112, 1192, 1208, 1250, 1256 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

MATHEMATICA

Do[If[Mod[n, 6]!=0, If[IntegerQ[n/DivisorSigma[0, n]], Print[n]]], {n, 1500}]

CROSSREFS

Intersection of A033950 and A047253.

Sequence in context: A181887 A221049 A181476 * A301281 A091793 A109351

Adjacent sequences:  A055675 A055676 A055677 * A055679 A055680 A055681

KEYWORD

nonn

AUTHOR

Robert G. Wilson v, Jun 09 2000

STATUS

approved

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Last modified August 11 08:50 EDT 2020. Contains 336422 sequences. (Running on oeis4.)