Row sums of the triangle in A199333.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =19a(5) =42a(6) =99a(7) =208a(8) =443a(9) =906a(10) =1853a(11) =3780a(12) =7595a(13) =15246a(14) =30537a(15) =61160a(16) =122413a(17) =244930a(18) =489985a(19) =980080a(20) =1960257a(21) =3920646a(22) =7841419a(23) =15682972a(24) =31366187a(25) =62732582a(26) =125465509a(27) =250931320a(28) =501863047a(29) =1003726454