G.f.: 1/2 + 1/(1 + AGM(1, sqrt(1-16*x))).
A328046
G.f.: 1/2 + 1/(1 + AGM(1, sqrt(1-16*x))).
Terms
- a(0) =1a(1) =1a(2) =7a(3) =68a(4) =763a(5) =9276a(6) =118656a(7) =1572024a(8) =21368155a(9) =296187164a(10) =4169180104a(11) =59420124472a(12) =855590919392
External references
- oeis: A328046