G.f. satisfies A(x) = 1 + x*A(x)^2 + x^2*A(x)^4 + x^3*A(x)^6.
A186241
G.f. satisfies A(x) = 1 + x*A(x)^2 + x^2*A(x)^4 + x^3*A(x)^6.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =12a(4) =54a(5) =262a(6) =1337a(7) =7072a(8) =38426a(9) =213197a(10) =1202795a(11) =6879160a(12) =39794416a(13) =232429030a(14) =1368806610a(15) =8118934656a(16) =48458809586a(17) =290832756606
External references
- oeis: A186241