G.f. satisfies A(x) = ( 1 + x*A(x)^2*(1 + x*A(x)) )^2.
A365153
G.f. satisfies A(x) = ( 1 + x*A(x)^2*(1 + x*A(x)) )^2.
Terms
- a(0) =1a(1) =2a(2) =11a(3) =74a(4) =563a(5) =4604a(6) =39524a(7) =351322a(8) =3205699a(9) =29854250a(10) =282615379a(11) =2711494224a(12) =26307568324a(13) =257673017952
External references
- oeis: A365153