Expansion of (1 - x - sqrt(1 - 2*x - 23*x^2))/(12*x^2).

Terms

a(0) =1a(1) =1a(2) =7a(3) =19a(4) =109a(5) =421a(6) =2251a(7) =10207a(8) =53593a(9) =263305a(10) =1385263a(11) =7109323a(12) =37728901a(13) =198723565a(14) =1065245299a(15) =5706564247a(16) =30879236017a(17) =167409942289a(18) =913397457367