A124238 Terms of A123857 that are not powers of 2.

38, 205, 316, 736, 3776, 4916, 5888, 7736, 11138, 22287, 23308, 23924, 39538, 62336, 71936

Offset

1,1

Comments

A123857 list composite indices n that divide A123855(n-1) = Sum[ Sum[ Prime[i]^j, {i,1,n-1}], {j,1,n-1}]. Corresponding indices n such that A123857(n) belongs to this sequence are 5,8,10,12,...

Links

Table of n, a(n) for n=1..15.

Crossrefs

Cf. A123857, A123856, A123855.

Sequence in context: A005910 A281769 A191698 * A020870 A211502 A259518

Adjacent sequences: A124235 A124236 A124237 * A124239 A124240 A124241

Keyword

hard,more,nonn

Author

Alexander Adamchuk, Oct 22 2006

Extensions

More terms from Max Alekseyev, Sep 13 2009

Status

approved