Expansion of g/(1 - x^3*g^2), where g = 1+x*g^4 is the g.f. of A002293.
A391098
Expansion of g/(1 - x^3*g^2), where g = 1+x*g^4 is the g.f. of A002293.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =23a(4) =143a(5) =984a(6) =7176a(7) =54437a(8) =425151a(9) =3395351a(10) =27599795a(11) =227596829a(12) =1899316786a(13) =16009756517a(14) =136110736835
External references
- oeis: A391098