G.f. A(x) satisfies A(x) = (1 + x*A(x)^3 / (1+x))^2.
A371537
G.f. A(x) satisfies A(x) = (1 + x*A(x)^3 / (1+x))^2.
Terms
- a(0) =1a(1) =2a(2) =11a(3) =90a(4) =845a(5) =8620a(6) =92792a(7) =1037474a(8) =11930952a(9) =140223730a(10) =1676824810a(11) =20336742860a(12) =249554057158
External references
- oeis: A371537