A289702 Primes of the form k!4+1024, where k!4 is the quadruple factorial number (A007662).

1069, 1609, 1515229, 40884559, 4996617649, 3496303289505049, 3080000333445961551649, 56064899053039198176082552869866162894943516649, 4767836158257635361854381088929485809336884933170042099072266649

Offset

1,1

Links

Robert Price, Table of n, a(n) for n = 1..13

Henri& Renaud Lifchitz, PRP Records.Search for n!4+1024.

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] + 1024, {i, 0, 100}], PrimeQ[#]&]

Crossrefs

Cf. A291351.

Sequence in context: A145298 A145299 A328894 * A095673 A252569 A020386

Adjacent sequences: A289699 A289700 A289701 * A289703 A289704 A289705

Keyword

nonn

Author

Robert Price, Sep 02 2017

Status

approved