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A289518 Primes of the form k!4+64, where k!4 is the quadruple factorial number (A007662). 1
67, 109, 3529, 10009, 65899, 151412689, 1267389649, 341094033905689, 9807130727058790189, 36453104912477522894689, 1008407509171875041482378189, 43350768819741354903275421016919057203189, 29366774490668885282893783501883117566129541193767295703189 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Henri& Renaud Lifchitz, PRP Records.Search for n!4+64.
OpenPFGW Project, Primality Tester
MATHEMATICA
MultiFactorial[n_, k_] := If[n<1, 1, n*MultiFactorial[n-k, k]];
Select[Table[MultiFactorial[i, 4] + 64, {i, 0, 100}], PrimeQ[#]&]
Select[Table[Times@@Range[n, 1, -4]+64, {n, 200}], PrimeQ] (* Harvey P. Dale, May 31 2020 *)
CROSSREFS
Cf. A291347.
Sequence in context: A139511 A142193 A141889 * A229058 A141925 A187990
KEYWORD
nonn
AUTHOR
Robert Price, Sep 02 2017
STATUS
approved

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Last modified March 29 04:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)