a(n) in base 16 is a repdigit.

Terms

a(0) =0a(1) =1a(2) =2a(3) =3a(4) =4a(5) =5a(6) =6a(7) =7a(8) =8a(9) =9a(10) =10a(11) =11a(12) =12a(13) =13a(14) =14a(15) =15a(16) =17a(17) =34a(18) =51a(19) =68a(20) =85a(21) =102a(22) =119a(23) =136a(24) =153a(25) =170a(26) =187a(27) =204a(28) =221a(29) =238