a(n) is the unique k such that A382357(k) = 2^n.

Terms

a(0) =1a(1) =2a(2) =5a(3) =6a(4) =27a(5) =28a(6) =87a(7) =88a(8) =371a(9) =372a(10) =1303a(11) =1304a(12) =5717a(13) =5718a(14) =27099a(15) =27100a(16) =100637a(17) =100638a(18) =429041a(19) =429042a(20) =1676037a(21) =1676038a(22) =6566201a(23) =6566202a(24) =26703687a(25) =26703688a(26) =105939329a(27) =105939330a(28) =424972311a(29) =424972312