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

Terms

a(0) =0a(1) =1a(2) =2a(3) =7a(4) =20a(5) =65a(6) =206a(7) =679a(8) =2248a(9) =7569a(10) =25690a(11) =88055a(12) =303964a(13) =1056497a(14) =3693158a(15) =12977655a(16) =45813008a(17) =162400609a(18) =577843890a(19) =2063053991a(20) =7388487460a(21) =26535797729a(22) =95552015614a(23) =344897769991