Half the number of length n integer sequences with sum zero and sum of squares 4050.
A157577
Half the number of length n integer sequences with sum zero and sum of squares 4050.
Terms
- a(0) =1a(1) =3a(2) =378a(3) =18910a(4) =992325a(5) =74527005a(6) =5338966892a(7) =339980231676
External references
- oeis: A157577