Expansion of g^2/(1 - x^3*g), where g = 1+x*g^4 is the g.f. of A002293.
A389653
Expansion of g^2/(1 - x^3*g), where g = 1+x*g^4 is the g.f. of A002293.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =53a(4) =343a(5) =2409a(6) =17802a(7) =136336a(8) =1072423a(9) =8612591a(10) =70324162a(11) =582058522a(12) =4872341229a(13) =41177749046a(14) =350871681958
External references
- oeis: A389653