Leftmost node in rows of the power tree A114622.

Terms

a(0) =1a(1) =2a(2) =3a(3) =5a(4) =7a(5) =14a(6) =19a(7) =38a(8) =57a(9) =71a(10) =142a(11) =284a(12) =568a(13) =571a(14) =1142a(15) =2284a(16) =4568a(17) =9136a(18) =18272a(19) =36544a(20) =36545a(21) =73089a(22) =146178a(23) =292356a(24) =292361a(25) =584722a(26) =1169444a(27) =2338888a(28) =4677776a(29) =9355552