Expansion of e.g.f.: (1-2*x)*sqrt(1-4*x).

A126089

Expansion of e.g.f.: (1-2*x)*sqrt(1-4*x).

Terms

    a(0) =1a(1) =-4a(2) =4a(3) =0a(4) =-48a(5) =-960a(6) =-20160a(7) =-483840a(8) =-13305600a(9) =-415134720a(10) =-14529715200a(11) =-564583219200

External references