Constant term in the expansion of ((Sum_{k=-2..2} x^k) * (Sum_{k=-2..2} y^k) - (Sum_{k=-1..1} x^k) * (Sum_{k=-1..1} y^k))^n.
A329075
Constant term in the expansion of ((Sum_{k=-2..2} x^k) * (Sum_{k=-2..2} y^k) - (Sum_{k=-1..1} x^k) * (Sum_{k=-1..1} y^k))^n.
Terms
- a(0) =1a(1) =0a(2) =16a(3) =48a(4) =1200a(5) =10200a(6) =165760a(7) =2032800a(8) =30115120a(9) =417189360a(10) =6116225976a(11) =88579001280
External references
- oeis: A329075