G.f. A(x) satisfies: A(x - 3*x*A(x)) = x + x*A(x).
A291817
G.f. A(x) satisfies: A(x - 3*x*A(x)) = x + x*A(x).
Terms
- a(0) =1a(1) =4a(2) =40a(3) =580a(4) =10312a(5) =209752a(6) =4707952a(7) =114128308a(8) =2946787192a(9) =80268150808
External references
- oeis: A291817