

A100288


Primes of the form (1!)^2 + (2!)^2 + (3!)^2 +...+ (k!)^2.


6




OFFSET

1,1


COMMENTS

Jonathan Vos Post contributed these numbers to Prime Curios.


LINKS

Table of n, a(n) for n=1..9.
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



