A063106 - OEIS

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A063106

Primes of form !n + 2n - 1.

1

2, 5, 17, 43, 887, 522956339, 20935051082417771847631371547939998232420940393

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..7.

PROG

(PARI) for(n=1, 50, x=sum(k=0, n-1, k!)+(2*n-1); if(isprime(x), print(x)))

CROSSREFS

Sequence in context: A076076 A136194 A056304 * A096295 A215580 A275210

Adjacent sequences: A063103 A063104 A063105 * A063107 A063108 A063109

KEYWORD

nonn

AUTHOR

Jason Earls, Aug 08 2001

STATUS

approved