G.f. satisfies: A(x) = (1 - 3*x*A(x)^2) * sqrt(4*A(x)^2 - 3).
A231617
G.f. satisfies: A(x) = (1 - 3*x*A(x)^2) * sqrt(4*A(x)^2 - 3).
Terms
- a(0) =1a(1) =1a(2) =8a(3) =75a(4) =788a(5) =8914a(6) =106006a(7) =1306629a(8) =16544772a(9) =213925368a(10) =2812797588a(11) =37494368574a(12) =505536154470
External references
- oeis: A231617