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A253605 Primes p such that the polynomial x^2 + x + p generates only primes for x=1..13. 1

%I #11 Jan 15 2015 03:59:19

%S 17,41,27649987598537,30431463129071

%N Primes p such that the polynomial x^2 + x + p generates only primes for x=1..13.

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

%Y Subsequence of A253592 and A191458. Cf. A164926.

%K nonn,more

%O 1,1

%A _Zak Seidov_, Jan 05 2015

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Last modified April 19 17:39 EDT 2024. Contains 371797 sequences. (Running on oeis4.)