Numbers whose base-7 and base-9 expansions have the same digit sum.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =6a(6) =28a(7) =29a(8) =30a(9) =31a(10) =32a(11) =33a(12) =34a(13) =54a(14) =55a(15) =99a(16) =100a(17) =101a(18) =102a(19) =103a(20) =104a(21) =126a(22) =127a(23) =128a(24) =129a(25) =130a(26) =131a(27) =132a(28) =153a(29) =175