Expansion of 1/(1-(x+x^2)c(2x)), c(x) the g.f. of A000108.
A110508
Expansion of 1/(1-(x+x^2)c(2x)), c(x) the g.f. of A000108.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =17a(4) =87a(5) =490a(6) =2945a(7) =18517a(8) =120340a(9) =802005a(10) =5451651a(11) =37652546a(12) =263480357a(13) =1864065017a(14) =13311094644a(15) =95816113129a(16) =694511157535
External references
- oeis: A110508