Row sums of A291940.

Terms

a(0) =1a(1) =1a(2) =-2a(3) =5a(4) =-9a(5) =14a(6) =-24a(7) =47a(8) =-87a(9) =151a(10) =-272a(11) =505a(12) =-918a(13) =1656a(14) =-3020a(15) =5512a(16) =-10020a(17) =18221a(18) =-33172a(19) =60388a(20) =-109899a(21) =199992a(22) =-364002a(23) =662529a(24) =-1205777a(25) =2194488a(26) =-3994057a(27) =7269275a(28) =-13230124a(29) =24078998