A260566 Numbers n such that (n^61+1)/(n+1) is prime.

2, 7, 70, 178, 208, 251, 274, 276, 290, 326, 328, 350, 413, 452, 552, 558, 594, 595, 605, 607, 626, 787, 791, 801, 905, 971, 1019, 1091, 1117, 1140, 1198, 1241, 1274, 1357, 1428, 1462, 1604, 1647, 1654, 1705, 1717, 1908, 1987, 2061, 2109, 2161, 2309, 2372, 2450

Offset

1,1

Links

Tim Johannes Ohrtmann, Table of n, a(n) for n = 1..10000

Mathematica

Select[Range[1, 10000], PrimeQ[(#^61 + 1)/(# + 1)] &]

Prog

(PARI) for(n=1, 10000, if(isprime((n^61+1)/(n+1)), print1(n, ", ")))
(Magma) [n: n in [1..10000] |IsPrime((n^61 + 1) div (n + 1))]

Crossrefs

Cf. A055494, A246392, A250174, A250178, A250181, A250185, A250187, A250193, A260558-A260573.

Sequence in context: A323673 A366359 A319640 * A113866 A165978 A106917

Adjacent sequences: A260563 A260564 A260565 * A260567 A260568 A260569

Keyword

nonn

Author

Tim Johannes Ohrtmann, Jul 29 2015

Status

approved