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A303738 Primes of form (2*k)! + k! - 1. 1
2, 40343, 371993326789901217467999454553208905727999 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(4) has 154 digits and is too large to be included.

LINKS

Table of n, a(n) for n=1..3.

FORMULA

a(n) = (2*A303737(n))! + A303737(n)! - 1.

MAPLE

f:=factorial: select(isprime, [seq(f(2*k)+f(k)-1, k=1..600)]);

CROSSREFS

Cf. A242487, A300947, A303737.

Sequence in context: A272166 A291881 A257968 * A055578 A232733 A106025

Adjacent sequences:  A303735 A303736 A303737 * A303739 A303740 A303741

KEYWORD

nonn

AUTHOR

Muniru A Asiru, May 27 2018

STATUS

approved

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Last modified April 20 20:26 EDT 2021. Contains 343137 sequences. (Running on oeis4.)