Expansion of g^2/(1 - x^3*g^4), where g = 1+x*g^4 is the g.f. of A002293.
A391083
Expansion of g^2/(1 - x^3*g^4), where g = 1+x*g^4 is the g.f. of A002293.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =53a(4) =346a(5) =2433a(6) =17983a(7) =137725a(8) =1083277a(9) =8699016a(10) =71023821a(11) =587803305a(12) =4920081835a(13) =41578591148a(14) =354267242982
External references
- oeis: A391083