Numbers whose base-11 representation has the same nonzero number of 6's and 7's.

Terms

a(0) =73a(1) =83a(2) =194a(3) =204a(4) =315a(5) =325a(6) =436a(7) =446a(8) =557a(9) =567a(10) =678a(11) =688a(12) =733a(13) =744a(14) =755a(15) =766a(16) =777a(17) =788a(18) =803a(19) =804a(20) =805a(21) =806a(22) =807a(23) =808a(24) =811a(25) =812a(26) =813a(27) =821a(28) =832a(29) =843