Expansion of (1 + 3*x + 4*x^2 - sqrt(1 - 2*x - 7*x^2))/(4 + 8*x).

Terms

a(0) =0a(1) =1a(2) =0a(3) =1a(4) =1a(5) =5a(6) =11a(7) =39a(8) =113a(9) =377a(10) =1207a(11) =4043a(12) =13509a(13) =45957a(14) =157171a(15) =542671a(16) =1884665a(17) =6586993a(18) =23137647a(19) =81662355a(20) =289414157a(21) =1029598333a(22) =3675337963a(23) =13160833623a(24) =47261437761a(25) =170164260713a(26) =614154154791