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 A107573 #2 Mar 30 2012 18:57:06 %S A107573 2,2,3,2,3,3,2,3,4,3,4,2,3,4,4,3,4,5,2,3,4,4,5,3,4,5,5,2,3,4,4,5,5,6, %T A107573 3,4,5,5,6,2,3,4,4,5,5,6,6,3,4,5,5,6,6,7,2,3,4,4,5,5,6,6,6,7,3,4,5,5, %U A107573 6,6,7,7,2,3,4,4,5,5,6,6,6,7,7,8,3,4,5,5,6,6,7,7,7,8,2,3,4,4,5,5,6,6,6,7,7 %N A107573 a(n)=least sidelength of n-th triangle listed at A107572. %e A107573 The first 5 integer-sided scalene triangles (a,b,c) with a<b<c are (2,3,4), (2,4,5), (3,4,5), (2,5,6), (3,4,6), of which the least sidelengths are 2,2,3,2,3 %Y A107573 Cf. A107572, A107574, A107575, A107576, A107577, A005044, A070080. %K A107573 nonn %O A107573 1,1 %A A107573 _Clark Kimberling_, May 16 2005