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A289550
Primes of the form k!6-4, where k!6 is the sextuple factorial number (A085158).
1
2, 3, 23, 401, 8501, 229631, 623641
OFFSET
1,1
COMMENTS
The next term is too large to display.
The next term (a(8)) has 113 digits. - Harvey P. Dale, Dec 09 2020
LINKS
MATHEMATICA
MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
Select[Table[MultiFactorial[i, 6] - 4, {i, 4, 100}], PrimeQ[#]&]
Select[Table[Times@@Range[n, 1, -6]-4, {n, 3, 100}], PrimeQ] (* Harvey P. Dale, Dec 09 2020 *)
CROSSREFS
Cf. A289547.
Sequence in context: A064888 A104458 A191859 * A154553 A160341 A092388
KEYWORD
nonn
AUTHOR
Robert Price, Jul 07 2017
STATUS
approved