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A288412 Primes of the form k!2+512, where k!2 is the double factorial number (A006852). 1
617, 135647, 2027537, 654729587, 7905853581137, 370285001030422820361936176659518850400275455268246313217966819668512968338481634393678502844088430422210693359887 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Henri& Renaud Lifchitz, PRP Records.Search for n!2+512.
OpenPFGW Project, Primality Tester
MATHEMATICA
MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
Select[Table[MultiFactorial[i, 2] + 512, {i, 0, 100}], PrimeQ[#]&]
CROSSREFS
Cf. A076196.
Sequence in context: A350083 A275739 A108818 * A234559 A251323 A020377
KEYWORD
nonn
AUTHOR
Robert Price, Jun 08 2017
STATUS
approved

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Last modified May 23 16:36 EDT 2024. Contains 372765 sequences. (Running on oeis4.)