|
| |
|
|
A014949
|
|
Numbers n such that n divides 8^n - 1.
|
|
9
| |
|
|
1, 7, 49, 343, 889, 2359, 2401, 6223, 16513, 16807, 43561, 112903, 115591, 117649, 299593, 304927, 790321, 794983, 809137, 823543, 2033143, 2097151, 2134489, 5532247, 5564881, 5663959, 5764801, 13549249, 14232001, 14338681, 14680057
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,2
|
|
|
COMMENTS
| For all k 7^k is in the sequence. - Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 05 2002
Contribution from Alexander Adamchuk (alex(AT)kolmogorov.com), May 16 2010: (Start)
7 divides a(n) for n>1.
Prime divisors of a (n) in the order of their first appearance are {7, 127, 337, 2287, 15241, 14407, 18199, 42463, ...}. (End)
|
|
|
CROSSREFS
| Sequence in context: A171281 A057266 A057833 * A057845 A045584 A124536
Adjacent sequences: A014946 A014947 A014948 * A014950 A014951 A014952
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Olivier Gerard (olivier.gerard(AT)gmail.com)
|
|
|
EXTENSIONS
| More terms from Benoit Cloitre (benoit7848c(AT)orange.fr), Mar 05 2002
a(15)-a(46) from Alexander Adamchuk (alex(AT)kolmogorov.com), May 16 2010
|
| |
|
|
