Row sums of triangle A118404.

Terms

a(0) =1a(1) =0a(2) =0a(3) =-2a(4) =4a(5) =-6a(6) =12a(7) =-26a(8) =52a(9) =-102a(10) =204a(11) =-410a(12) =820a(13) =-1638a(14) =3276a(15) =-6554a(16) =13108a(17) =-26214a(18) =52428a(19) =-104858a(20) =209716a(21) =-419430a(22) =838860a(23) =-1677722a(24) =3355444a(25) =-6710886a(26) =13421772a(27) =-26843546a(28) =53687092a(29) =-107374182