a(n) = n! - n^k where n^(k+1) > n! >= n^k.

Terms

a(0) =0a(1) =0a(2) =3a(3) =8a(4) =95a(5) =504a(6) =2639a(7) =7552a(8) =303831a(9) =2628800a(10) =20429629a(11) =49019904a(12) =5411290079a(13) =66517244416a(14) =731023977375