This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A062865 #12 Mar 03 2023 13:11:15
%S A062865 0,1,2,3,6,9,18,27,32,36,54,68,72,81,96,108,162,204,216,243,252,276,
%T A062865 288,324,486,504,612,648,729,756,828,864,972,991,1296,1458,1512,1836,
%U A062865 1944,2187,2268,2376,2484,2592,2916,2973,3888,4374,4536,5508,5832,6561
%N A062865 When expressed in base 3 and then interpreted in base 6, is a multiple of the original number.
%H A062865 Harvey P. Dale, <a href="/A062865/b062865.txt">Table of n, a(n) for n = 1..201</a>
%e A062865 9 in base 3 is 100, which interpreted in base 6 is 36 = 4*9.
%t A062865 Join[{0},Select[Range[7000],Divisible[FromDigits[IntegerDigits[#,3], 6], #]&]] (* _Harvey P. Dale_, Jan 31 2012 *)
%K A062865 base,nonn
%O A062865 1,3
%A A062865 _Erich Friedman_, Jul 21 2001
%E A062865 Offset changed to 1 by _Georg Fischer_, Mar 03 2023