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 A061435 #10 Apr 02 2020 18:37:04
%S A061435 8,64,729,9261,97336,970299,9938375,99897344,997002999,9993948264,
%T A061435 99961946721,999700029999,9999516957184,99994258523375,
%U A061435 999970000299999,9999934692543307,99999429057832312,999997000002999999
%N A061435 a(n) is the largest n-digit cube.
%H A061435 Harvey P. Dale, <a href="/A061435/b061435.txt">Table of n, a(n) for n = 1..1000</a>
%F A061435 a(n) = (ceiling(10^(n/3)) - 1)^3. - Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 30 2003
%e A061435 a(4) = 9261 = 21^3 has 4 digits while 22^3 = 10648 has 5 digits.
%p A061435 A061435 := n->(ceil(10^(n/3))-1)^3;
%t A061435 Table[Floor[Surd[10^n-1,3]]^3,{n,20}] (* _Harvey P. Dale_, Apr 02 2020 *)
%Y A061435 Cf. A061432, A061433, A061434.
%K A061435 nonn,base,easy
%O A061435 1,1
%A A061435 _Amarnath Murthy_, May 03 2001
%E A061435 More terms from Larry Reeves (larryr(AT)acm.org), May 16 2001