1,1

The next term is too large to display.

The next term (a(8)) has 113 digits. - Harvey P. Dale, Dec 09 2020

Robert Price, Table of n, a(n) for n = 1..10

Henri & Renaud Lifchitz, PRP Records.Search for n!6-4.

Joe McLean, Interesting Sources of Probable Primes

OpenPFGW Project, Primality Tester

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 *)

Cf. A289547.

Sequence in context: A064888 A104458 A191859 * A154553 A160341 A092388

Adjacent sequences: A289547 A289548 A289549 * A289551 A289552 A289553

nonn

Robert Price, Jul 07 2017

approved