A289510 Primes of the form k!4+32, where k!4 is the quadruple factorial number (A007662).

37, 53, 263, 617, 65867, 208877, 5221157, 40883567, 44358635507, 184874815157, 178311467764705307, 9807130727058790157, 200200021673987500790657, 173407420068655576409731157, 4551830726072842264843919206776501006328157

Offset

1,1

Links

Robert Price, Table of n, a(n) for n = 1..23

Henri& Renaud Lifchitz, PRP Records.Search for n!4+32.

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, 4] + 32, {i, 0, 100}], PrimeQ[#]&]

Crossrefs

Cf. A291345.

Sequence in context: A375217 A242930 A139918 * A108273 A045223 A134222

Adjacent sequences: A289507 A289508 A289509 * A289511 A289512 A289513

Keyword

nonn

Author

Robert Price, Sep 02 2017

Status

approved