Expansion of the exponential generating function (1/2)*(1 + 4*x)*(1 - (1 + 4*x)^(-1/2))/x.
A292220
Expansion of the exponential generating function (1/2)*(1 + 4*x)*(1 - (1 + 4*x)^(-1/2))/x.
Terms
- a(0) =1a(1) =1a(2) =-4a(3) =30a(4) =-336a(5) =5040a(6) =-95040a(7) =2162160a(8) =-57657600a(9) =1764322560a(10) =-60949324800
External references
- oeis: A292220