E.g.f.: -log(1 - (1 - sqrt(5 - 4*exp(x)) )/2 ).

A118792

E.g.f.: -log(1 - (1 - sqrt(5 - 4*exp(x)) )/2 ).

Terms

    a(0) =0a(1) =1a(2) =4a(3) =30a(4) =352a(5) =5670a(6) =116344a(7) =2902830a(8) =85326112a(9) =2887962870a(10) =110620824904

External references