Row sums of A339494.

Terms

a(0) =1a(1) =3a(2) =9a(3) =19a(4) =37a(5) =73a(6) =144a(7) =283a(8) =556a(9) =1093a(10) =2149a(11) =4225a(12) =8306a(13) =16329a(14) =32102a(15) =63111a(16) =124073a(17) =243921a(18) =479536a(19) =942743a(20) =1853384a(21) =3643657a(22) =7163241a(23) =14082561a(24) =27685586a(25) =54428429a(26) =107003474a(27) =210363291a(28) =413563341a(29) =813044121