A244391 Numbers k such that 1 + k + k^3 + k^5 + k^7 + k^9 + ... + k^61 is prime.

100, 136, 276, 288, 696, 772, 810, 1036, 1128, 1602, 1678, 1806, 1956, 1962, 2212, 2220, 2500, 2610, 2670, 2718, 2796, 2818, 3066, 3366, 3598, 3936, 4198, 4360, 4452, 4782, 5340, 5998, 6126, 6202, 6210, 6990

Offset

1,1

Links

Chai Wah Wu, Table of n, a(n) for n = 1..1153 (n = 1..250 from Vincenzo Librandi)

Mathematica

Select[Range[10000], PrimeQ[Total[#^Range[1, 61, 2]] + 1]&]

Prog

(Magma) [n: n in [0..7000] | IsPrime(s) where s is 1+&+[n^i: i in [1..61 by 2]]];

Crossrefs

Cf. similar sequences listed in A244376.

Sequence in context: A295161 A127336 A045211 * A108551 A319440 A096598

Adjacent sequences: A244388 A244389 A244390 * A244392 A244393 A244394

Keyword

nonn,easy

Author

Vincenzo Librandi, Jun 27 2014

Status

approved