a(n) = smallest m such that A308190(m) = n, or -1 if no such m exists.

Terms

a(0) =5a(1) =6a(2) =8a(3) =7a(4) =10a(5) =16a(6) =17a(7) =30a(8) =29a(9) =54a(10) =53a(11) =102a(12) =101a(13) =198a(14) =197a(15) =390a(16) =389a(17) =774a(18) =773a(19) =1542a(20) =3080a(21) =3079a(22) =6154a(23) =12304a(24) =24604a(25) =36901a(26) =73798a(27) =147592a(28) =295180a(29) =295517