G.f. A(x) satisfies [x^(2*n)] A(x)^(3*n) = -3 and [x^(2*n+1)] A(x)^(3*n+1) = [x^(2*n+1)] A(x)^(3*n+2) for n >= 1.
A376225
G.f. A(x) satisfies [x^(2*n)] A(x)^(3*n) = -3 and [x^(2*n+1)] A(x)^(3*n+1) = [x^(2*n+1)] A(x)^(3*n+2) for n >= 1.
Terms
- a(0) =1a(1) =1a(2) =-2a(3) =10a(4) =-43a(5) =245a(6) =-1415a(7) =8699a(8) =-55146a(9) =359502a(10) =-2391307a(11) =16187568a(12) =-111112275a(13) =772031484a(14) =-5419579222a(15) =38392912974a(16) =-274157203525
External references
- oeis: A376225