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 A024154 #3 Mar 30 2012 18:55:53 %S A024154 0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,1,1,1,1,2,1,2,2,2,3,3,4,3,4,4,4,5, %T A024154 5,5,6,6,8,6,9,8,8,9,9,11,10,11,12,12,13,13,14,15,15,16,16,18,18,17, %U A024154 19,19,22,20,23,23,24,25,26,26,28,27,28,29,31,31,32,34,34,36,35,38,37,38,40,41,44,43,45 %N A024154 Number of integer-sided triangles with sides a,b,c, a<b<c, a+b+c=n that are acute. %K A024154 nonn %O A024154 1,22 %A A024154 _Clark Kimberling_