OFFSET
1,1
LINKS
Robert Price, Table of n, a(n) for n = 1..15
Henri& Renaud Lifchitz, PRP Records.Search for n!6+18.
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, 6] + 18, {i, 0, 100}], PrimeQ[#]&]
Select[Table[(Times@@Range[k, 1, -6])+18, {k, 250}], PrimeQ] (* Harvey P. Dale, Dec 14 2021 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Robert Price, Jun 11 2017
STATUS
approved