Expansion of (1/((1-4x)c(x)))/(1-x^2c(x)/sqrt(1-4x)), c(x) the g.f. of A000108.
A113956
Expansion of (1/((1-4x)c(x)))/(1-x^2c(x)/sqrt(1-4x)), c(x) the g.f. of A000108.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =48a(4) =194a(5) =787a(6) =3199a(7) =13017a(8) =52997a(9) =215831a(10) =879076a(11) =3580511a(12) =14582842a(13) =59388280a(14) =241829963a(15) =984609111a(16) =4008282780a(17) =16315179752a(18) =66399357417a(19) =270193396769
External references
- oeis: A113956