Half the number of length n integer sequences with sum zero and sum of squares 128.
A157540
Half the number of length n integer sequences with sum zero and sum of squares 128.
Terms
- a(0) =1a(1) =3a(2) =6a(3) =430a(4) =8775a(5) =114681a(6) =1213471a(7) =11685663a(8) =110201400a(9) =997307245a(10) =8767514811a(11) =75092781699a(12) =615909156954
External references
- oeis: A157540