Expansion of g.f. A(x) satisfying A(x) = 1 + x*(A(x)^2 - A(-x)^2)/2 + x*(A(x)^3 + A(-x)^3)/2.
A368626
Expansion of g.f. A(x) satisfying A(x) = 1 + x*(A(x)^2 - A(-x)^2)/2 + x*(A(x)^3 + A(-x)^3)/2.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =9a(4) =22a(5) =138a(6) =356a(7) =2585a(8) =6830a(9) =53838a(10) =144156a(11) =1197546a(12) =3233692a(13) =27859444a(14) =75665736a(15) =669553209a(16) =1826204958a(17) =16493851110a(18) =45131989100a(19) =414263198030
External references
- oeis: A368626