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

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =7a(5) =11a(6) =26a(7) =42a(8) =99a(9) =163a(10) =382a(11) =638a(12) =1486a(13) =2510a(14) =5812a(15) =9908a(16) =22819a(17) =39203a(18) =89846a(19) =155382a(20) =354522a(21) =616666a(22) =1401292a(23) =2449868a(24) =5546382a(25) =9740686a(26) =21977516a(27) =38754732a(28) =87167164a(29) =154276028