

A167211


Numbers n such that number of perfect partitions of n1 divides n.


1



1, 2, 3, 4, 5, 6, 7, 8, 11, 13, 15, 16, 17, 19, 21, 23, 29, 31, 32, 33, 37, 39, 40, 41, 43, 47, 48, 51, 53, 57, 59, 61, 64, 67, 69, 71, 73, 78, 79, 83, 87, 89, 93, 97, 101, 103, 107, 109, 111, 113, 123, 127, 128, 129, 130, 131, 132, 137, 139, 141, 149, 151, 157
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OFFSET

1,2


LINKS

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


FORMULA

{n: A002033(n1)  n}.


MATHEMATICA

f[1] = 1; f[n_] := f[n] = DivisorSum[n, f[#] &, # < n &]; Select[Range[100], Divisible[#, f[#]] &] (* Amiram Eldar, Dec 30 2019 *)


CROSSREFS

Cf. A002033, A007694, A033950.
Sequence in context: A093515 A249724 A084369 * A067133 A192588 A258946
Adjacent sequences: A167208 A167209 A167210 * A167212 A167213 A167214


KEYWORD

nonn


AUTHOR

JuriStepan Gerasimov, Oct 30 2009


EXTENSIONS

Definition corrected by R. J. Mathar, May 21 2010
More terms from Amiram Eldar, Dec 30 2019


STATUS

approved



