Row sums of triangle A118407.

Terms

a(0) =1a(1) =1a(2) =-1a(3) =1a(4) =1a(5) =-1a(6) =3a(7) =-3a(8) =1a(9) =7a(10) =-13a(11) =13a(12) =1a(13) =-25a(14) =51a(15) =-51a(16) =1a(17) =103a(18) =-205a(19) =205a(20) =1a(21) =-409a(22) =819a(23) =-819a(24) =1a(25) =1639a(26) =-3277a(27) =3277a(28) =1a(29) =-6553