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A289853 Primes of the form k!2-32, where k!2 is the double factorial number (A006852). 1
73, 25373791335626257947657609343, 488960130368663401543922783473071784646213671843, 2783097421140216173669833173554685254745646937315554685903182520041762334418182818434647284243799923238034037601108551025390593 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Robert Price, Table of n, a(n) for n = 1..4

Henri & Renaud Lifchitz, PRP Records.Search for n!2-32.

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, 2] - 32, {i, 6, 100}], PrimeQ[#]&]

CROSSREFS

Cf. A262772.

Sequence in context: A159438 A291992 A076848 * A000319 A033394 A114969

Adjacent sequences:  A289850 A289851 A289852 * A289854 A289855 A289856

KEYWORD

nonn

AUTHOR

Robert Price, Jul 13 2017

STATUS

approved

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Last modified March 6 04:42 EST 2021. Contains 341842 sequences. (Running on oeis4.)