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 A055959 #9 Aug 08 2024 07:25:02
%S A055959 0,0,0,0,0,0,0,0,0,8,0,-8,-16,-24,-32,-40,-48,-56,16,8,0,-8,-16,-24,
%T A055959 -32,-40,-48,24,16,8,0,-8,-16,-24,-32,-40,32,24,16,8,0,-8,-16,-24,-32,
%U A055959 40,32,24,16,8,0,-8,-16,-24,48,40,32,24,16,8,0,-8,-16,56,48,40,32,24,16,8,0,-8,64,56,48,40,32,24,16,8,0,80,0,-80,-160
%N A055959 n - reversal of base 9 digits of n (written in base 10).
%C A055959 a(n) is a multiple of 8.
%F A055959 a(n) = n - A030108(n).
%t A055959 Table[n-FromDigits[Reverse[IntegerDigits[n,9]],9],{n,0,120}] (* _Harvey P. Dale_, Dec 17 2022 *)
%Y A055959 Cf. A030108, A056965.
%K A055959 base,sign
%O A055959 0,10
%A A055959 _Henry Bottomley_, Jul 18 2000