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A289820
Primes of the form k!3-243, where k!3 is the triple factorial number (A007661).
1
37, 1106317, 17041023757, 13106744139423334399757, 111788986826349170054555238399757, 254451773522587035734629406212095999757, 12931890526958090978845347074978621685759999757, 23265085063150097152411131624511949388385310979653631999999757
OFFSET
1,1
LINKS
MATHEMATICA
MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
Select[Table[MultiFactorial[i, 3] - 243, {i, 10, 100}], PrimeQ[#]&]
CROSSREFS
Cf. A247465.
Sequence in context: A350307 A262646 A063681 * A087020 A238840 A345467
KEYWORD
nonn
AUTHOR
Robert Price, Jul 12 2017
STATUS
approved