Numbers whose base-12 representation has the same nonzero number of 1's and 11's.

Terms

a(0) =23a(1) =133a(2) =155a(3) =179a(4) =191a(5) =203a(6) =215a(7) =227a(8) =239a(9) =251a(10) =263a(11) =275a(12) =276a(13) =278a(14) =279a(15) =280a(16) =281a(17) =282a(18) =283a(19) =284a(20) =285a(21) =286a(22) =311a(23) =421a(24) =455a(25) =565a(26) =599a(27) =709a(28) =743a(29) =853