Expansion of e.g.f.: sqrt(1+4*x)/(1+2*x).
A126967
Expansion of e.g.f.: sqrt(1+4*x)/(1+2*x).
Terms
- a(0) =1a(1) =0a(2) =-4a(3) =48a(4) =-624a(5) =9600a(6) =-175680a(7) =3790080a(8) =-95235840a(9) =2752081920a(10) =-90328089600
External references
- oeis: A126967