A244387 Numbers k such that 1 + k + k^3 + k^5 + k^7 + k^9 + ... + k^45 is prime.

102, 200, 570, 1368, 1428, 1674, 1796, 1980, 2148, 2426, 2534, 2600, 2990, 3006, 3138, 3188, 3696, 4116, 4122, 4710, 4808, 5078, 6072, 6158, 6486, 6732, 6762, 6956, 7080, 7146, 7190, 7328, 7866, 7976, 8256, 8664, 9494, 9758, 9780, 9890

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..490

Mathematica

Select[Range[10000], PrimeQ[Total[#^Range[1, 45, 2]] + 1]&]

Prog

(Magma) [n: n in [0..10000] | IsPrime(s) where s is 1+&+[n^i: i in [1..45 by 2]]];

Crossrefs

Cf. similar sequences listed in A244376.

Sequence in context: A242068 A053326 A151955 * A044334 A044715 A197816

Adjacent sequences: A244384 A244385 A244386 * A244388 A244389 A244390

Keyword

nonn,easy

Author

Vincenzo Librandi, Jun 27 2014

Status

approved