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 A073072 #14 Feb 12 2014 22:00:18
%S A073072 0,3,1,8,2,9,15,0,17,25,4,19,44,20,9,40,54,19,18,57,71,28,17,64,104,
%T A073072 53,0,55,112,100,39,24,89,156,106,35,38,113,190,128,47,36,121,208,172,
%U A073072 81,12,107,204,244,143,40,65,172,281,239,126,11,106,225,346,252,127,0,129
%N A073072 Minimum value of abs(n^2-x^3) x>0.
%F A073072 a(n^3) = 0.
%F A073072 a(n) = abs(A077111(n)). - _R. J. Mathar_, May 01 2008
%t A073072 Table[Min[n^2-Floor[(n^2)^(1/3)]^3,(Floor[(n^2)^(1/3)]+1)^3-n^2],{n,100}] (* _Vladimir Joseph Stephan Orlovsky_, Feb 01 2012 *)
%o A073072 (PARI) a(n)=vecmin(vector(ceil(n^(2/3)),i,abs(n^2-i^3)))
%Y A073072 Cf. A002938.
%K A073072 easy,nonn
%O A073072 1,2
%A A073072 _Benoit Cloitre_, Aug 17 2002