Expansion of g^2/(1 - x^2*g^3), where g = 1+x*g^4 is the g.f. of A002293.
A391080
Expansion of g^2/(1 - x^2*g^3), where g = 1+x*g^4 is the g.f. of A002293.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =57a(4) =371a(5) =2602a(6) =19196a(7) =146813a(8) =1153554a(9) =9255781a(10) =75519859a(11) =624675625a(12) =5226355365a(13) =44149963427a(14) =376053050411
External references
- oeis: A391080