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

Author

Jason Earls, Jul 09 2001

Keywords

• easy
• nonn

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.

Programs

PARI

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