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 A100288 Primes of the form (1!)^2 + (2!)^2 + (3!)^2 +...+ (k!)^2. 6
 5, 41, 617, 15017, 25935017, 1651637417, 13301522971817, 41117342095090841723228045851817, 2616218222822143606864564493635469851817 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Jonathan Vos Post contributed these numbers to Prime Curios. LINKS G. L. Honaker, Jr. and C. Caldwell, Prime Curios! EXAMPLE 41 = (1!)^2 + (2!)^2 + (3!)^2 is prime. PROG (PARI) lista(nn) = {my(s=1); for(k=2, nn, s+=(k!)^2; if(ispseudoprime(s), print1(s, ", "))); } \\ Jinyuan Wang, Mar 08 2020 CROSSREFS Cf. A100289 (k such that (1!)^2 + (2!)^2 + (3!)^2 + ... + (k!)^2 is prime). See also A061062, A104344. Sequence in context: A246760 A073854 A104344 * A076094 A076131 A003719 Adjacent sequences:  A100285 A100286 A100287 * A100289 A100290 A100291 KEYWORD nonn,fini AUTHOR T. D. Noe, Nov 11 2004 STATUS approved

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Last modified December 4 18:29 EST 2020. Contains 338936 sequences. (Running on oeis4.)