O.g.f. A(x) satisfies: A(x) = x * (1 - 5*x*A'(x)) / (1 - 6*x*A'(x)).
A300993
O.g.f. A(x) satisfies: A(x) = x * (1 - 5*x*A'(x)) / (1 - 6*x*A'(x)).
Terms
- a(0) =1a(1) =1a(2) =8a(3) =84a(4) =1080a(5) =16056a(6) =266256a(7) =4816080a(8) =93638016a(9) =1937252160a(10) =42339628800a(11) =972303685632
External references
- oeis: A300993