Expansion of g.f. A(x) satisfying A(x) = 1 + x*(3*A(x)^2 - A(-x)^2)/2.
A368634
Expansion of g.f. A(x) satisfying A(x) = 1 + x*(3*A(x)^2 - A(-x)^2)/2.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =9a(4) =52a(5) =138a(6) =904a(7) =2581a(8) =18020a(9) =53622a(10) =389112a(11) =1189146a(12) =8855560a(13) =27571156a(14) =209174544a(15) =660249549a(16) =5079702852a(17) =16203796158a(18) =126033559960a(19) =405408758062
External references
- oeis: A368634