1,1
Jonathan Vos Post contributed these numbers to Prime Curios.
Table of n, a(n) for n=1..9.
G. L. Honaker, Jr. and C. Caldwell, Prime Curios!
41 = (1!)^2 + (2!)^2 + (3!)^2
Cf. A100289 (n such that (1!)^2 + (2!)^2 + (3!)^2 +...+ (n!)^2 is prime).
See also A061062, A104344.
Sequence in context: A246760 A073854 A104344 * A076094 A076131 A003719
Adjacent sequences: A100285 A100286 A100287 * A100289 A100290 A100291
nonn
T. D. Noe, Nov 11 2004
approved
