1,2

Also see comments in A046022 = primes together with 1 and 4.

{n!/(n^2) when an integer} = {n!/(n^2) where n is a nonnegative integer other than 4 or a prime} = {A000142(n)/A000290(n) when an integer.

Cf. A000142, A000290, A046022.

Sequence in context: A035279 A015268 A059420 this_sequence A125722 A006410 A159874

Adjacent sequences: A129903 A129904 A129905 this_sequence A129907 A129908 A129909

easy,nonn

Jonathan Vos Post (jvospost3(AT)gmail.com), Jun 09 2007