Expansion of (1 + x) / ((1 - 2*x)*sqrt(1 - 4*x)).

Terms

a(0) =1a(1) =5a(2) =18a(3) =62a(4) =214a(5) =750a(6) =2676a(7) =9708a(8) =35718a(9) =132926a(10) =499228a(11) =1888644a(12) =7186876a(13) =27478508a(14) =105474216a(15) =406182552a(16) =1568563014a(17) =6071812638a(18) =23552366796a(19) =91525132692a(20) =356242058004