A126914 Numbers n such that 1 + k^2 + k^4 + k^6 + k^8 + k^10 + k^12 + k^14 + k^16 + k^18 + k^19 is prime.

1, 9, 37, 40, 60, 69, 85, 114, 147, 156, 174, 183, 255, 289, 312, 324, 336, 349, 361, 373, 418, 451, 493, 499, 511, 520, 534, 549, 649, 657, 673, 676, 715, 741, 787, 855, 862, 874, 883, 888, 897, 952, 960, 1021, 1087, 1092, 1104, 1126, 1141, 1147, 1171, 1209

Offset

1,2

Links

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

Mathematica

a = {}; Do[If[PrimeQ[1 + n^2 + n^4 + n^6 + n^8 + n^10 + n^12 + n^14 + n^16 + n^18 + n^19], AppendTo[a, n]], {n, 1, 1400}]; a

Prog

(PARI) is(n)=isprime(1+n^2+n^4+n^6+n^8+n^10+n^12+n^14+n^16+n^18+n^19) \\ Charles R Greathouse IV, Jun 13 2017

Crossrefs

Cf. A049407, A124175 A124176 A124177, A124178, A124179, A124180, A124181, A126908-A126916.

Sequence in context: A091961 A103758 A274769 * A337238 A273594 A041150

Adjacent sequences: A126911 A126912 A126913 * A126915 A126916 A126917

Keyword

nonn,easy

Author

Artur Jasinski, Dec 31 2006

Status

approved