Numbers whose base-7 representation contains exactly three 2's.

Terms

a(0) =114a(1) =457a(2) =702a(3) =751a(4) =786a(5) =793a(6) =798a(7) =799a(8) =801a(9) =802a(10) =803a(11) =804a(12) =807a(13) =814a(14) =821a(15) =828a(16) =849a(17) =898a(18) =947a(19) =996a(20) =1143a(21) =1486a(22) =1829a(23) =2172a(24) =2515a(25) =2858a(26) =3103a(27) =3152a(28) =3187a(29) =3194