Half the number of length n integer sequences with sum zero and sum of squares 450.
A157547
Half the number of length n integer sequences with sum zero and sum of squares 450.
Terms
- a(0) =1a(1) =3a(2) =126a(3) =2170a(4) =37335a(5) =921333a(6) =21967484a(7) =466292604a(8) =9161931075a(9) =164162481681
External references
- oeis: A157547