Expansion of (1-x-sqrt(1-2*x-15*x^2))/(8*x^2).

Terms

a(0) =1a(1) =1a(2) =5a(3) =13a(4) =57a(5) =201a(6) =861a(7) =3445a(8) =14897a(9) =63313a(10) =278389a(11) =1223069a(12) =5465065a(13) =24513945a(14) =111037005a(15) =505298565a(16) =2314343265a(17) =10645982625a(18) =49202944485a(19) =228253816365