Row sums of array T as in A054110.

Terms

a(0) =1a(1) =2a(2) =7a(3) =18a(4) =39a(5) =82a(6) =167a(7) =338a(8) =679a(9) =1362a(10) =2727a(11) =5458a(12) =10919a(13) =21842a(14) =43687a(15) =87378a(16) =174759a(17) =349522a(18) =699047a(19) =1398098a(20) =2796199a(21) =5592402a(22) =11184807a(23) =22369618a(24) =44739239a(25) =89478482a(26) =178956967a(27) =357913938a(28) =715827879a(29) =1431655762