Expansion of e.g.f. (1 - x - sqrt(1-2*x+x^2-4*x^3))/(2*x).
A052723
Expansion of e.g.f. (1 - x - sqrt(1-2*x+x^2-4*x^3))/(2*x).
Terms
- a(0) =0a(1) =0a(2) =2a(3) =6a(4) =24a(5) =240a(6) =2880a(7) =35280a(8) =524160a(9) =9434880a(10) =188697600a(11) =4151347200a(12) =101548339200
External references
- oeis: A052723