Sort then Add, a(1)=19.

Terms

a(0) =19a(1) =38a(2) =76a(3) =143a(4) =277a(5) =554a(6) =1009a(7) =1028a(8) =1156a(9) =2312a(10) =3535a(11) =6890a(12) =7579a(13) =13358a(14) =26716a(15) =39383a(16) =72772a(17) =95549a(18) =141148a(19) =252596a(20) =478165a(21) =623843a(22) =857311a(23) =970889a(24) =1049788a(25) =1197677a(26) =2365456a(27) =4711022a(28) =4823269a(29) =7057958