Constant term in the expansion of (Sum_{k=0..n} k*(x^k + x^(-k)))^n.
A318793
Constant term in the expansion of (Sum_{k=0..n} k*(x^k + x^(-k)))^n.
Terms
- a(0) =1a(1) =0a(2) =10a(3) =84a(4) =12060a(5) =922680a(6) =203474180a(7) =45546045720
External references
- oeis: A318793