Expansion of g/(1 + x^3*g^3), where g = 1+x*g^4 is the g.f. of A002293.
A391326
Expansion of g/(1 + x^3*g^3), where g = 1+x*g^4 is the g.f. of A002293.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =21a(4) =136a(5) =947a(6) =6945a(7) =52858a(8) =413697a(9) =3308796a(10) =26925841a(11) =222227383a(12) =1855755034a(13) =15651109359a(14) =133121828588
External references
- oeis: A391326