A244386 Numbers k such that 1 + k + k^3 + k^5 + k^7 + k^9 + ... + k^41 is prime.

2, 88, 126, 230, 300, 582, 596, 612, 730, 790, 886, 978, 1000, 1022, 1088, 1160, 1616, 1710, 1958, 2200, 2480, 2512, 2746, 3058, 3120, 3132, 3142, 3348, 3398, 3546, 3568, 3800, 4068, 4190, 4268, 4438, 4446, 4692, 4780, 5012, 5026, 5300, 5498, 5558, 5698, 5880

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..600

Mathematica

Select[Range[7000], PrimeQ[Total[#^Range[1, 41, 2]] + 1] &]

Prog

(Magma) [n: n in [0..7000] | IsPrime(s) where s is 1+&+[n^i: i in [1..41 by 2]]];

Crossrefs

Cf. similar sequences listed in A244376.

Sequence in context: A280551 A283945 A172736 * A273520 A066226 A058439

Adjacent sequences: A244383 A244384 A244385 * A244387 A244388 A244389

Keyword

nonn,easy

Author

Vincenzo Librandi, Jun 27 2014

Status

approved