1,2

Table of n, a(n) for n=1..59.

(PARI) is(n)=isprime(2*n^3+7) \\ Charles R Greathouse IV, Jun 13 2017

Sequence in context: A002243 A094763 A338916 * A331865 A087360 A111501

Adjacent sequences: A125556 A125557 A125558 * A125560 A125561 A125562

base,nonn,easy

Zak Seidov, Jan 01 2007

approved