OFFSET
1,1
COMMENTS
The next term has 174 digits. - Harvey P. Dale, Mar 09 2018
LINKS
Robert Price, Table of n, a(n) for n = 1..8
Henri& Renaud Lifchitz, PRP Records.Search for n!2+256.
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, 2] + 256, {i, 0, 100}], PrimeQ[#]&]
Select[Range[200]!!+256, PrimeQ] (* Harvey P. Dale, Mar 09 2018 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Robert Price, Jun 08 2017
STATUS
approved