Expansion of e.g.f. x*(1-2*x)*(1 - 2*x - sqrt(1-4*x))/2 - x^3.
A052721
Expansion of e.g.f. x*(1-2*x)*(1 - 2*x - sqrt(1-4*x))/2 - x^3.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =120a(6) =2880a(7) =70560a(8) =1935360a(9) =59875200a(10) =2075673600a(11) =79913433600
External references
- oeis: A052721