A062411 a(n) = (-1)^(p-1)*(p-1)! + 1 where p = prime(n).

0, 3, 25, 721, 3628801, 479001601, 20922789888001, 6402373705728001, 1124000727777607680001, 304888344611713860501504000001, 265252859812191058636308480000001

Offset

1,2

Comments

Apart from the first term, the same as A060371. - R. J. Mathar, Oct 02 2008

References

D. M. Burton, Elementary Number Theory, Allyn and Bacon, Inc. Boston, MA, 1976, p. 164.

Links

Table of n, a(n) for n=1..11.

Prog

(PARI) for(n=1, 13, print((-1)^(prime(n)-1)*(prime(n)-1)!+1))

Crossrefs

Sequence in context: A131310 A362657 A365359 * A136516 A002021 A322063

Adjacent sequences: A062408 A062409 A062410 * A062412 A062413 A062414

Keyword

easy,nonn

Author

Jason Earls, Jul 09 2001

Status

approved