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 A030100 #15 Mar 14 2020 05:53:51 %S A030100 1,1331,3375,35937,59319,357911,753571,5177717,5359375,5735339, %T A030100 9393931,17373979,37595375,37159393753,99317171591,175333911173, %U A030100 397551775977,1913551573375,9735913353977,11997979755957,17171515157399,335571975137771,1331399339931331 %N A030100 Cubes whose digits are all odd. %H A030100 Giovanni Resta, <a href="/A030100/b030100.txt">Table of n, a(n) for n = 1..563</a> (terms < 10^57) %F A030100 a(n) = A030099(n)^3. %t A030100 Select[Range[23000]^3,And@@(OddQ/@IntegerDigits[#])&] (* _Harvey P. Dale_, Aug 20 2011 *) %Y A030100 Cf. A030099, A034376, A052004. %K A030100 nonn,base,nice %O A030100 1,2 %A A030100 _Patrick De Geest_