Half the number of length n integer sequences with sum zero and sum of squares 4608.

A157580

Half the number of length n integer sequences with sum zero and sum of squares 4608.

Terms

    a(0) =1a(1) =3a(2) =18a(3) =11970a(4) =1334085a(5) =133955073a(6) =9824277155a(7) =567625941444

External references