G.f. B(x) satisfies: B(x) = 1/((1-x*A(x))*(1-x*C(x)^3)) such that A(x) = 1/((1-x*B(x)^2)*(1-x*C(x)^3)) and C(x) = 1/((1-x*A(x))*(1-x*B(x)^2)) are the g.f.s of A341954 and A341956, respectively.

A341955

G.f. B(x) satisfies: B(x) = 1/((1-x*A(x))*(1-x*C(x)^3)) such that A(x) = 1/((1-x*B(x)^2)*(1-x*C(x)^3)) and C(x) = 1/((1-x*A(x))*(1-x*B(x)^2)) are the g.f.s of A341954 and A341956, respectively.

Terms

    a(0) =1a(1) =2a(2) =11a(3) =80a(4) =659a(5) =5865a(6) =54954a(7) =534087a(8) =5334509a(9) =54423368a(10) =564713959a(11) =5941244370a(12) =63230204938a(13) =679510980507

External references