G.f. satisfies A(x) = 1 + x*A(x)^2 * (1 + x*A(x)^2)^2.
A367282
G.f. satisfies A(x) = 1 + x*A(x)^2 * (1 + x*A(x)^2)^2.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =18a(4) =94a(5) =527a(6) =3108a(7) =18993a(8) =119214a(9) =763997a(10) =4978304a(11) =32883853a(12) =219690066a(13) =1481858835a(14) =10078051830a(15) =69030877581a(16) =475795428158
External references
- oeis: A367282