Half the number of length n integer sequences with sum zero and sum of squares 5618.

A157585

Half the number of length n integer sequences with sum zero and sum of squares 5618.

Terms

    a(0) =1a(1) =3a(2) =330a(3) =27570a(4) =2233965a(5) =165759111a(6) =11709395180a(7) =864416336904

External references