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A182784 Primes of the form 2*n^4-1. 3
31, 1249, 2591, 4801, 8191, 13121, 76831, 131071, 388961, 1062881, 1229311, 2672671, 6223391, 7496191, 9759361, 10616831, 12499999, 13530401, 29552671, 31505921, 35701249, 42762751, 48019999, 63281249, 66724351, 77900161, 90424351, 99574271, 149610401 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Subsequence of A066436. - R. J. Mathar, Dec 02 2010

LINKS

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

FORMULA

a(n) = 2*A182783(n)^4-1. - R. J. Mathar, Dec 02 2010

MATHEMATICA

Select[Table[2 n^4 - 1, {n, 100}], PrimeQ] (* Vincenzo Librandi, Sep 01 2012 *)

PROG

(MAGMA) [a: n in [1..350] | IsPrime(a) where a is 2*n^4-1];

CROSSREFS

Cf. A182783, A182785.

Sequence in context: A199234 A123826 A130004 * A139162 A078961 A261856

Adjacent sequences:  A182781 A182782 A182783 * A182785 A182786 A182787

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Dec 02 2010

STATUS

approved

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Last modified August 19 20:20 EDT 2019. Contains 326133 sequences. (Running on oeis4.)