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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 Robert Price, Table of n, a(n) for n = 1..8 Henri& Renaud Lifchitz, PRP Records.Search for n!2+512. 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] + 512, {i, 0, 100}], PrimeQ[#]&] CROSSREFS Cf. A076196. Sequence in context: A275048 A275739 A108818 * A234559 A251323 A020377 Adjacent sequences:  A288409 A288410 A288411 * A288413 A288414 A288415 KEYWORD nonn AUTHOR Robert Price, Jun 08 2017 STATUS approved

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Last modified May 31 16:29 EDT 2020. Contains 334748 sequences. (Running on oeis4.)