G.f. C(x) satisfies: C(x) = 1/((1-x*A(x))*(1-x*B(x)^2)) such that A(x) = 1/((1-x*B(x)^2)*(1-x*C(x)^3)) and B(x) = 1/((1-x*A(x))*(1-x*C(x)^3)) are the g.f.s of A341954 and A341955, respectively.
A341956
G.f. C(x) satisfies: C(x) = 1/((1-x*A(x))*(1-x*B(x)^2)) such that A(x) = 1/((1-x*B(x)^2)*(1-x*C(x)^3)) and B(x) = 1/((1-x*A(x))*(1-x*C(x)^3)) are the g.f.s of A341954 and A341955, respectively.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =61a(4) =489a(5) =4283a(6) =39702a(7) =382899a(8) =3802403a(9) =38618535a(10) =399277260a(11) =4188343775a(12) =44465270461a(13) =476856774184
External references
- oeis: A341956