G.f. satisfies A(x) = ( 1 + x * A(x)^(1/4) * (1 + A(x)^(3/4)) )^2.
A370891
G.f. satisfies A(x) = ( 1 + x * A(x)^(1/4) * (1 + A(x)^(3/4)) )^2.
Terms
- a(0) =1a(1) =4a(2) =14a(3) =52a(4) =205a(5) =844a(6) =3588a(7) =15632a(8) =69434a(9) =313264a(10) =1431650a(11) =6613732a(12) =30834548a(13) =144895284a(14) =685566370a(15) =3263309844a(16) =15616322995a(17) =75085908112a(18) =362563417968
External references
- oeis: A370891