A289737 Primes of the form k!6-48, where k!6 is the sextuple factorial number (A085158).

7, 43, 887, 43177, 21827527, 894930527, 1714167050058087577, 46738795448742522077, 345259481979861010937327, 40054638345554502541724271794327, 131181879631714694053764558690577, 15873007435437477980505511601565577, 595812745390123225308148542941328077

Offset

1,1

Links

Robert Price, Table of n, a(n) for n = 1..18

Henri & Renaud Lifchitz, PRP Records.Search for n!6-48.

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] - 48, {i, 11, 100}], PrimeQ[#]&]

Crossrefs

Cf. A289701.

Sequence in context: A316635 A222981 A023316 * A065786 A015463 A177507

Adjacent sequences: A289734 A289735 A289736 * A289738 A289739 A289740

Keyword

nonn

Author

Robert Price, Jul 10 2017

Status

approved