Half the number of length n integer sequences with sum zero and sum of squares 6498.

A157589

Half the number of length n integer sequences with sum zero and sum of squares 6498.

Terms

    a(0) =1a(1) =9a(2) =342a(3) =26670a(4) =1960515a(5) =199230213a(6) =17543249724

External references