a(n) = [x^n] (Sum_{k=0..n} (k*x)^k)/(Sum_{k=0..n} (-k*x)^k).
A316090
a(n) = [x^n] (Sum_{k=0..n} (k*x)^k)/(Sum_{k=0..n} (-k*x)^k).
Terms
- a(0) =1a(1) =2a(2) =2a(3) =48a(4) =94a(5) =5694a(6) =12352a(7) =1539850a(8) =3323890a(9) =737028224a(10) =1556371198a(11) =548747031342
External references
- oeis: A316090