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

Terms

a(0) =1a(1) =2a(2) =14a(3) =36a(4) =214a(5) =604a(6) =3340a(7) =9928a(8) =52582a(9) =161708a(10) =831588a(11) =2620920a(12) =13187836a(13) =42350744a(14) =209519576a(15) =682960784a(16) =3332923526a(17) =10998087884a(18) =53067486836a(19) =176924683544a(20) =845545262996