login
A125882
Numbers k for which k^4+k^3-1 is prime.
4
2, 3, 6, 11, 13, 18, 24, 34, 38, 39, 43, 49, 52, 57, 58, 73, 74, 79, 90, 102, 104, 107, 113, 116, 122, 123, 126, 135, 139, 148, 155, 181, 183, 188, 193, 199, 203, 223, 234, 240, 247, 256, 261, 272, 273, 277, 286, 288, 298, 303, 329, 338, 344, 346, 357, 364, 366
OFFSET
1,1
LINKS
MATHEMATICA
Do[If[PrimeQ[x^4 + x^3 - 1], Print[x]], {x, 1, 100}]
PROG
(PARI) is(n)=isprime(n^4+n^3-1) \\ Charles R Greathouse IV, May 15 2013
CROSSREFS
KEYWORD
nonn
AUTHOR
Artur Jasinski, Dec 14 2006
EXTENSIONS
More terms from Amiram Eldar, Mar 18 2020
STATUS
approved