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 A055952 #10 Aug 08 2024 02:48:02
%S A055952 0,2,4,6,8,10,7,14,21,28,35,42,14,21,28,35,42,49,21,28,35,42,49,56,28,
%T A055952 35,42,49,56,63,35,42,49,56,63,70,37,74,111,148,185,222,49,86,123,160,
%U A055952 197,234,61,98,135,172,209,246,73,110,147,184,221,258,85,122,159,196
%N A055952 n + reversal of base 6 digits of n (written in base 10).
%C A055952 If n has an even number of digits in base 6 then a(n) is a multiple of 7.
%H A055952 Seiichi Manyama, <a href="/A055952/b055952.txt">Table of n, a(n) for n = 0..10000</a>
%F A055952 a(n) = n + A030105(n).
%t A055952 Table[n + IntegerReverse[n, 6], {n, 0, 100}] (* _Paolo Xausa_, Aug 08 2024 *)
%Y A055952 Cf. A056964.
%K A055952 base,nonn
%O A055952 0,2
%A A055952 _Henry Bottomley_, Jul 18 2000