A244384 Numbers k such that 1 + k + k^3 + k^5 + k^7 + k^9 + ... + k^33 is prime.

60, 74, 86, 150, 164, 438, 446, 504, 560, 620, 830, 870, 890, 908, 990, 1194, 1302, 1488, 1596, 1668, 1788, 2252, 2354, 2564, 2652, 2838, 3194, 3602, 3792, 3828, 3924, 3960, 4296, 4506, 4608, 4676, 4968, 5352, 5402, 5504, 5694, 5868, 5922, 6150, 6170, 6176

Offset

1,1

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..660

Mathematica

Select[Range[8000], PrimeQ[Total[#^Range[1, 33, 2]] + 1]&]

Prog

(Magma) [n: n in [0..6500] | IsPrime(s) where s is 1+&+[n^i: i in [1..33 by 2]]];

Crossrefs

Cf. similar sequences listed in A244376.

Sequence in context: A114837 A328149 A154548 * A290018 A323979 A067207

Adjacent sequences: A244381 A244382 A244383 * A244385 A244386 A244387

Keyword

nonn,easy

Author

Vincenzo Librandi, Jun 27 2014

Status

approved