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 A055956 #10 Aug 08 2024 06:37:08
%S A055956 0,2,4,6,8,10,12,14,9,18,27,36,45,54,63,72,18,27,36,45,54,63,72,81,27,
%T A055956 36,45,54,63,72,81,90,36,45,54,63,72,81,90,99,45,54,63,72,81,90,99,
%U A055956 108,54,63,72,81,90,99,108,117,63,72,81,90,99,108,117,126,65,130,195,260
%N A055956 n + reversal of base 8 digits of n (written in base 10).
%C A055956 If n has an even number of digits in base 8 then a(n) is a multiple of 9.
%H A055956 Seiichi Manyama, <a href="/A055956/b055956.txt">Table of n, a(n) for n = 0..10000</a>
%F A055956 a(n) = n + A030107(n).
%t A055956 Table[n + IntegerReverse[n, 8], {n, 0, 100}] (* _Paolo Xausa_, Aug 08 2024 *)
%Y A055956 Cf. A030107, A056964.
%K A055956 base,nonn
%O A055956 0,2
%A A055956 _Henry Bottomley_, Jul 18 2000