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A253605 Primes p such that the polynomial x^2 + x + p generates only primes for x=1..13. 0
17, 41, 27649987598537, 30431463129071 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..4.

PROG

(PARI) isok(p) = {for (n=1, 13, if (! isprime(subst(x^2+x+p, x, n)), return (0)); ); 1; } \\ Michel Marcus, Jan 13 2015

CROSSREFS

Subsequence of A253592 and A191458. Cf. A164926.

Sequence in context: A191457 A191458 A253592 * A044094 A044475 A024188

Adjacent sequences:  A253602 A253603 A253604 * A253606 A253607 A253608

KEYWORD

nonn,more

AUTHOR

Zak Seidov, Jan 05 2015

STATUS

approved

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Last modified October 14 05:08 EDT 2019. Contains 327995 sequences. (Running on oeis4.)