G.f.: sqrt(1/agm(1, 1-8*x)) = sqrt(o.g.f. for A081085).
A089603
G.f.: sqrt(1/agm(1, 1-8*x)) = sqrt(o.g.f. for A081085).
Terms
- a(0) =1a(1) =2a(2) =8a(3) =40a(4) =226a(5) =1380a(6) =8880a(7) =59280a(8) =406416a(9) =2842400a(10) =20186752a(11) =145119616a(12) =1053575336a(13) =7711639760a(14) =56834201280a(15) =421327859520
External references
- oeis: A089603