OFFSET
1,1
LINKS
Robert Price, Table of n, a(n) for n = 1..14
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, 9, 100}], PrimeQ[#]&]
Select[Table[Times@@Range[n, 1, -6]-18, {n, 10, 300}], PrimeQ] (* Harvey P. Dale, Jul 07 2019 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Robert Price, Jul 10 2017
STATUS
approved