OFFSET
1,1
LINKS
Robert Price, Table of n, a(n) for n = 1..28
Henri& Renaud Lifchitz, PRP Records.Search for n!5+1.
Joe McLean, Interesting Sources of Probable Primes
OpenPFGW Project, Primality Tester
MATHEMATICA
MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
Select[Table[MultiFactorial[i, 5] + 1, {i, 0, 100}], PrimeQ[#]&]
CROSSREFS
KEYWORD
nonn
AUTHOR
Robert Price, Jun 13 2017
STATUS
approved