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 A071586 #11 Sep 15 2023 07:51:41 %S A071586 1,8,46,215,6904,86723,441262,2517902,61277761,827712431,4281473701, %T A071586 2954399858,63767491786,888318557945,4011156408934,23888027348153, %U A071586 656017679474182,8425863189971522,48918490589341081,278558570881511441 %N A071586 Powers of 8 written backwards. %H A071586 Seiichi Manyama, <a href="/A071586/b071586.txt">Table of n, a(n) for n = 0..1000</a> %o A071586 (PARI) for(i=1,50,n=8^i; s=ceil(log(n)/log(10)); print1(sum(i=0,s,10^(s-i-1)*(floor(n/10^i)-10*floor(n/10^(i+1)))),",")) %Y A071586 Cf. A004094, A004167, A071582, A071583, A071588, A071584, A071587. %K A071586 easy,nonn,base %O A071586 0,2 %A A071586 _Benoit Cloitre_, Jun 01 2002