Numbers whose base-12 representation has the same nonzero number of 7's and 8's.

Terms

a(0) =92a(1) =103a(2) =236a(3) =247a(4) =380a(5) =391a(6) =524a(7) =535a(8) =668a(9) =679a(10) =812a(11) =823a(12) =956a(13) =967a(14) =1016a(15) =1028a(16) =1040a(17) =1052a(18) =1064a(19) =1076a(20) =1088a(21) =1104a(22) =1105a(23) =1106a(24) =1107a(25) =1108a(26) =1109a(27) =1110a(28) =1113a(29) =1114