Expansion of 1/sqrt(1 - 4*x*(1+x)^3).

Terms

a(0) =1a(1) =2a(2) =12a(3) =62a(4) =342a(5) =1932a(6) =11094a(7) =64480a(8) =378150a(9) =2233304a(10) =13263772a(11) =79136844a(12) =473969586a(13) =2847911596a(14) =17159547804a(15) =103640073972a(16) =627280131594