G.f. A(x) satisfies A(x) = ( 1 + x * (1 + x*A(x)^2)^3 )^2.
A378787
G.f. A(x) satisfies A(x) = ( 1 + x * (1 + x*A(x)^2)^3 )^2.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =36a(4) =197a(5) =1184a(6) =7425a(7) =48308a(8) =322521a(9) =2198064a(10) =15227850a(11) =106924154a(12) =759245463a(13) =5442675080a(14) =39335090088a(15) =286296369000
External references
- oeis: A378787