Expansion of g/(1 - x^2*g), where g = 1+x*g^4 is the g.f. of A002293.
A390280
Expansion of g/(1 - x^2*g), where g = 1+x*g^4 is the g.f. of A002293.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =24a(4) =150a(5) =1024a(6) =7440a(7) =56309a(8) =439077a(9) =3502514a(10) =28445790a(11) =234410123a(12) =1955074718a(13) =16472105843a(14) =139986966392
External references
- oeis: A390280