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A289549 Primes of the form k!6-3, where k!6 is the sextuple factorial number (A085158). 1
2, 3, 13, 37, 73569236156415997, 2076797833465298943997, 3445912395099815280639997, 337699414719781897502719997, 2406637297721880276844203212799997, 56505983376657530671203898929399315771217221372411818526783048069123288081453694320639999999999997 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

Henri & Renaud Lifchitz, PRP Records.Search for n!6-3.

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] - 3, {i, 3, 100}], PrimeQ[#]&]

CROSSREFS

Cf. A279646.

Sequence in context: A082539 A168483 A100424 * A259261 A141511 A235615

Adjacent sequences:  A289546 A289547 A289548 * A289550 A289551 A289552

KEYWORD

nonn

AUTHOR

Robert Price, Jul 07 2017

STATUS

approved

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Last modified December 12 17:59 EST 2019. Contains 329960 sequences. (Running on oeis4.)