|
| |
|
|
A124238
|
|
Terms of A123857 that are not powers of 2.
|
|
1
| |
|
|
38, 205, 316, 736, 3776, 4916, 5888, 7736, 11138, 22287, 23308, 23924, 39538, 62336, 71936
(list; graph; refs; listen; history; internal format)
|
|
|
|
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,...
|
|
|
CROSSREFS
| Cf. A123857, A123856, A123855.
Sequence in context: A160064 A005910 A191698 * A020870 A165068 A160281
Adjacent sequences: A124235 A124236 A124237 * A124239 A124240 A124241
|
|
|
KEYWORD
| hard,more,nonn
|
|
|
AUTHOR
| Alexander Adamchuk (alex(AT)kolmogorov.com), Oct 22 2006
|
|
|
EXTENSIONS
| More terms from Max Alekseyev (maxale(AT)gmail.com), Sep 13 2009
|
| |
|
|
