G.f. satisfies A(x) = ( 1 + x / (1 - x*A(x)^3)^2 )^2.
A371615
G.f. satisfies A(x) = ( 1 + x / (1 - x*A(x)^3)^2 )^2.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =34a(4) =222a(5) =1622a(6) =12559a(7) =100904a(8) =835322a(9) =7070574a(10) =60922335a(11) =532566850a(12) =4711614912a(13) =42106192680a(14) =379544358032
External references
- oeis: A371615