Expansion of g^2/(1 + x*g), where g = 1+x*g^4 is the g.f. of A002293.
A391378
Expansion of g^2/(1 + x*g), where g = 1+x*g^4 is the g.f. of A002293.
Terms
- a(0) =1a(1) =1a(2) =7a(3) =40a(4) =267a(5) =1897a(6) =14123a(7) =108719a(8) =858421a(9) =6913914a(10) =56583401a(11) =469200322a(12) =3933669482a(13) =33287843079a(14) =283956543780
External references
- oeis: A391378