G.f. A(x) satisfies A(x) = 1/( 1 - 4*x*A(x)/(1-x) )^(1/2).
A372104
G.f. A(x) satisfies A(x) = 1/( 1 - 4*x*A(x)/(1-x) )^(1/2).
Terms
- a(0) =1a(1) =2a(2) =12a(3) =86a(4) =686a(5) =5858a(6) =52404a(7) =484814a(8) =4600652a(9) =44534386a(10) =438034928a(11) =4365350062a(12) =43983695242a(13) =447305878226
External references
- oeis: A372104