G.f. satisfies A(x) = ( 1 + x*A(x)^2 / (1 - x*A(x))^3 )^2.
A365151
G.f. satisfies A(x) = ( 1 + x*A(x)^2 / (1 - x*A(x))^3 )^2.
Terms
- a(0) =1a(1) =2a(2) =15a(3) =130a(4) =1263a(5) =13158a(6) =143704a(7) =1623766a(8) =18824931a(9) =222670678a(10) =2676674916a(11) =32604377358a(12) =401567277063
External references
- oeis: A365151