E.g.f. satisfies A(x) = 1 + x * A(x / (1 - x)).
A048800
E.g.f. satisfies A(x) = 1 + x * A(x / (1 - x)).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =12a(4) =120a(5) =1800a(6) =37440a(7) =1023120a(8) =35360640a(9) =1502323200a(10) =76738233600
External references
- oeis: A048800