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

Terms

a(0) =1a(1) =0a(2) =-1a(3) =3a(4) =-8a(5) =22a(6) =-64a(7) =196a(8) =-625a(9) =2055a(10) =-6917a(11) =23713a(12) =-82499a(13) =290511a(14) =-1033411a(15) =3707851a(16) =-13402696a(17) =48760366a(18) =-178405156a(19) =656043856a(20) =-2423307046a(21) =8987427466a(22) =-33453694486a(23) =124936258126a(24) =-467995871776