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 A055953 #11 Aug 08 2024 02:47:52
%S A055953 0,0,0,0,0,0,5,0,-5,-10,-15,-20,10,5,0,-5,-10,-15,15,10,5,0,-5,-10,20,
%T A055953 15,10,5,0,-5,25,20,15,10,5,0,35,0,-35,-70,-105,-140,35,0,-35,-70,
%U A055953 -105,-140,35,0,-35,-70,-105,-140,35,0,-35,-70,-105,-140,35,0,-35,-70,-105,-140,35,0,-35,-70,-105,-140,70,35,0,-35,-70
%N A055953 n - reversal of base 6 digits of n (written in base 10).
%C A055953 a(n) is a multiple of 5.
%H A055953 Paolo Xausa, <a href="/A055953/b055953.txt">Table of n, a(n) for n = 0..10000</a>
%F A055953 a(n) = n - A030105(n).
%t A055953 Table[n - IntegerReverse[n, 6], {n, 0, 100}] (* _Paolo Xausa_, Aug 08 2024 *)
%Y A055953 Cf. A030105, A056965.
%K A055953 base,sign
%O A055953 0,7
%A A055953 _Henry Bottomley_, Jul 18 2000