G.f. A(x) satisfies: 1/A(x)^2 + 4*x*A(x)^2 = 1/A(x^2) + 2*x*A(x^2).
A187814
G.f. A(x) satisfies: 1/A(x)^2 + 4*x*A(x)^2 = 1/A(x^2) + 2*x*A(x^2).
Terms
- a(0) =1a(1) =1a(2) =6a(3) =41a(4) =334a(5) =2901a(6) =26651a(7) =253709a(8) =2483395a(9) =24829132a(10) =252506507a(11) =2603798287a(12) =27161758393a(13) =286118173600
External references
- oeis: A187814