Numbers that are repdigits in base 7.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =8a(8) =16a(9) =24a(10) =32a(11) =40a(12) =48a(13) =57a(14) =114a(15) =171a(16) =228a(17) =285a(18) =342a(19) =400a(20) =800a(21) =1200a(22) =1600a(23) =2000a(24) =2400a(25) =2801a(26) =5602a(27) =8403a(28) =11204a(29) =14005