Expansion of g^2/(1 + x^2*g^3), where g = 1+x*g^3 is the g.f. of A001764.
A391299
Expansion of g^2/(1 + x^2*g^3), where g = 1+x*g^3 is the g.f. of A001764.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =25a(4) =119a(5) =606a(6) =3227a(7) =17751a(8) =100081a(9) =575281a(10) =3358727a(11) =19862646a(12) =118730323a(13) =716221525a(14) =4354522133a(15) =26656059022a(16) =164153643034
External references
- oeis: A391299