Expansion of B(x)/sqrt(1 + 2*(B(x)-1)/3), where B(x) is the g.f. of A004355.

A385719

Expansion of B(x)/sqrt(1 + 2*(B(x)-1)/3), where B(x) is the g.f. of A004355.

Terms

    a(0) =1a(1) =4a(2) =38a(3) =428a(4) =5204a(5) =66104a(6) =863840a(7) =11515308a(8) =155779966a(9) =2131436392a(10) =29426804398a(11) =409254436452

External references