Expansion of e.g.f. exp( Sum_{k>=1} (2*k)!/k! * (x/2)^k/k ).
A370086
Expansion of e.g.f. exp( Sum_{k>=1} (2*k)!/k! * (x/2)^k/k ).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =40a(4) =796a(5) =27196a(6) =1437136a(7) =108931264a(8) =11207616400
External references
- oeis: A370086