Expansion of 1/(2 - g^2), where g = 1+x*g^3 is the g.f. of A001764.
A391461
Expansion of 1/(2 - g^2), where g = 1+x*g^3 is the g.f. of A001764.
Terms
- a(0) =1a(1) =2a(2) =11a(3) =66a(4) =412a(5) =2630a(6) =17029a(7) =111344a(8) =733202a(9) =4854062a(10) =32269865a(11) =215245074a(12) =1439609582a(13) =9650033224a(14) =64808040028a(15) =435935055728
External references
- oeis: A391461