G.f. A(x) satisfies: A(x - x*A(x)) = x + 3*x*A(x).
A291819
G.f. A(x) satisfies: A(x - x*A(x)) = x + 3*x*A(x).
Terms
- a(0) =1a(1) =4a(2) =24a(3) =196a(4) =1944a(5) =21944a(6) =272080a(7) =3627412a(8) =51288200a(9) =761782104a(10) =11805102064a(11) =189901153112
External references
- oeis: A291819