Numbers whose base-11 representation has the same number of 2's and 7's.

Terms

a(0) =0a(1) =1a(2) =3a(3) =4a(4) =5a(5) =6a(6) =8a(7) =9a(8) =10a(9) =11a(10) =12a(11) =14a(12) =15a(13) =16a(14) =17a(15) =19a(16) =20a(17) =21a(18) =29a(19) =33a(20) =34a(21) =36a(22) =37a(23) =38a(24) =39a(25) =41a(26) =42a(27) =43a(28) =44a(29) =45