A289854 Primes of the form k!2 - 64, where k!2 is the double factorial number (A006882).
41, 881, 10331, 34459361, 13749310511, 213458046676811, 6190283353629311, 319830986772877770815561, 563862029680583509947946811, 25373791335626257947657609311, 488960130368663401543922783473071784646213671811
Offset: 1
Keywords
Links
- Robert Price, Table of n, a(n) for n = 1..13
- Henri and Renaud Lifchitz, PRP Records.Search for n!2-64.
- Joe McLean, Interesting Sources of Probable Primes.
- OpenPFGW Project, Primality Tester.
Programs
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Mathematica
MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]]; Select[Table[MultiFactorial[i, 2] - 64, {i, 7, 100}], PrimeQ[#]&]