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 A331253 #4 Jan 19 2020 20:40:41 %S A331253 1,2,3,2,4,3,5,3,4,6,7,5,4,3,8,5,4,9,6,5,10,6,11,7,4,6,12,5,8,13,7,7, %T A331253 7,4,14,5,9,6,15,8,5,8,6,16,10,8,17,6,9,9,7,18,11,5,19,9,7,9,12,10,6, %U A331253 10,20,7,8,21,13,5,10,11,22,11,6,10,23,8,14,8,9 %N A331253 Triangles with integer sides i <= j <= k sorted by area, and, in case of ties, lexicographically by side lengths (smallest first). The sequence gives longest side k. The other sides are in A331251 and A331252. %e A331253 See A331251. %Y A331253 Cf. A331251 (shortest side), A331252 (middle side). %K A331253 nonn %O A331253 1,2 %A A331253 _Hugo Pfoertner_, Jan 19 2020