Expansion of 1/(1-2*x*c(3*x)), c(x) the g.f. of A000108.
A110520
Expansion of 1/(1-2*x*c(3*x)), c(x) the g.f. of A000108.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =68a(4) =538a(5) =4652a(6) =42628a(7) =406856a(8) =4001914a(9) =40285724a(10) =413049580a(11) =4298523704a(12) =45288486436a(13) =482122686008
External references
- oeis: A110520