Expansion of e.g.f. (2 - 4*x + x^2)/((1 - x)*(1 - 2*x)).
A052584
Expansion of e.g.f. (2 - 4*x + x^2)/((1 - x)*(1 - 2*x)).
Terms
- a(0) =2a(1) =2a(2) =6a(3) =30a(4) =216a(5) =2040a(6) =23760a(7) =327600a(8) =5201280a(9) =93260160a(10) =1861574400a(11) =40914720000a(12) =981474278400
External references
- oeis: A052584