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 A038673 #7 May 19 2013 12:18:42 %S A038673 1,2,3,4,5,6,8,9,10,11,12,13,14,15,16,17,18,20,21,22,23,24,25,27,28, %T A038673 29,30,31,32,33,34,35,36,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52, %U A038673 53,54,55,57,58,59,60,62,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79 %N A038673 Numbers that are not the difference between two positive cubes. %Y A038673 Cf. Complement of A181123. %K A038673 nonn %O A038673 1,2 %A A038673 _Jeff Burch_