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A244383 Numbers k such that 1 + k + k^3 + k^5 + k^7 + k^9 + ... + k^29 is prime. 2

%I

%S 2,10,24,50,64,70,138,204,222,238,270,278,344,362,448,498,508,574,814,

%T 964,994,1188,1216,1340,1374,1394,1426,1454,1510,1556,1582,1652,1748,

%U 1760,1880,2060,2180,2192,2224,2424,2436,2500,2674,2784,2874,3166,3168,3190

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

%H Vincenzo Librandi, <a href="/A244383/b244383.txt">Table of n, a(n) for n = 1..1000</a>

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

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

%Y Cf. similar sequences listed in A244376.

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Jun 27 2014

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Last modified February 4 03:47 EST 2023. Contains 360045 sequences. (Running on oeis4.)