A213162 - OEIS

A213162

Smallest prime p such that (k+1)*p^2-k are prime for k=1..n.

2, 199, 409, 17569, 981091, 3918251, 1329433951, 75902670689, 45048280453021

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OFFSET

1,1

COMMENTS

a(1..8) are the first terms correspondingly in A106483, A213078, A213079, A213107, A213125, A213159, A213161, A213334.

LINKS

Table of n, a(n) for n=1..9.

PROG

(PARI) a(n) = {my(p = 2); until (ok, ok = 1; for (k = 1, n, if (! isprime((k+1)*p^2-k), ok = 0; break; ); ); if (!ok, p = nextprime(p+1); )); return (p); } \\ Michel Marcus, Apr 19 2013

CROSSREFS

Sequence in context: A262650 A123100 A033147 * A124339 A089772 A280090

Adjacent sequences: A213159 A213160 A213161 * A213163 A213164 A213165

KEYWORD

nonn,more

AUTHOR

Zak Seidov, Jun 06 2012

EXTENSIONS

a(9) from Tyler Busby, Jan 11 2023

STATUS

approved