|
Search: id:A007671
|
|
|
| A007671 |
|
Numbers n such that 2^n + 2^(n + 1)/2 + 1 is prime.
(Formerly M2481)
|
|
+0
6
|
|
| 1, 3, 5, 11, 19, 29, 157, 163, 283, 379, 997, 10141, 14699, 77291, 85237, 106693, 203789
(list; graph; listen)
|
|
|
OFFSET
|
1,2
|
|
|
REFERENCES
|
J. Brillhart et al., Factorizations of b^n +- 1. Contemporary Mathematics, Vol. 22, Amer. Math. Soc., Providence, RI, 2nd edition, 1985; and later supplements.
|
|
LINKS
|
J. Brillhart et al., Factorizations of b^n +- 1, Contemporary Mathematics, Vol. 22, Amer. Math. Soc., Providence, RI, 3rd edition, 2002.
S. S. Wagstaff, Jr., The Cunningham Project
|
|
CROSSREFS
|
Cf. A057429.
Sequence in context: A023233 A048161 A051642 this_sequence A090471 A124098 A127453
Adjacent sequences: A007668 A007669 A007670 this_sequence A007672 A007673 A007674
|
|
KEYWORD
|
hard,nonn
|
|
AUTHOR
|
njas, Robert G. Wilson v (rgwv(AT)rgwv.com)
|
|
EXTENSIONS
|
More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 07 2000
203789 found and proved prime by Mike Oakes (mikeoakes2(AT)aol.com), on Sep 28 2000.
|
|
|
Search completed in 0.002 seconds
|
