A244383 Numbers k such that 1 + k + k^3 + k^5 + k^7 + k^9 + ... + k^29 is prime.

2, 10, 24, 50, 64, 70, 138, 204, 222, 238, 270, 278, 344, 362, 448, 498, 508, 574, 814, 964, 994, 1188, 1216, 1340, 1374, 1394, 1426, 1454, 1510, 1556, 1582, 1652, 1748, 1760, 1880, 2060, 2180, 2192, 2224, 2424, 2436, 2500, 2674, 2784, 2874, 3166, 3168, 3190

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

Mathematica

Select[Range[6000], PrimeQ[Total[#^Range[1, 29, 2]] + 1] &]

Prog

(Magma) [n: n in [0..5500] | IsPrime(s) where s is 1+&+[n^i: i in [1..29 by 2]]];

Crossrefs

Cf. similar sequences listed in A244376.

Sequence in context: A224837 A049450 A092906 * A295053 A130016 A120550

Adjacent sequences: A244380 A244381 A244382 * A244384 A244385 A244386

Keyword

nonn,easy

Author

Vincenzo Librandi, Jun 27 2014

Status

approved