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 A338393 #27 Oct 29 2020 17:19:41 %S A338393 12,36,60,162,108,180,228,84,132,168,210,640,252,448,504,612,462,480, %T A338393 396,1050,1008,630,672,1632,756,792,1380,420,1740,1232,1584,1560,1188, %U A338393 1540,2052,1428,1820,840,1620,1320,1890,3612,2912,2280,1092,924,2340,2730,3220 %N A338393 Smallest perimeter of integer-sided triangles for which there exist exactly n triangles that have an integer inradius. %H A338393 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Incircle.html">Incircle</a>. %e A338393 a(1) = 12 because (3,4,5) is the smallest integer-sided triangle with an integer inradius and this integer radius = 1. %e A338393 a(2) = 36 and the 2 corresponding triangles are (9,10,17) with r=2 and (9,12,15) with r=3. %e A338393 a(3) = 60 and the 3 corresponding triangles are (6,25,29) with r=2, (10,24,26) with r=4 and (15,20,25) with r=5. %Y A338393 Cf. A005044, A070201, A120062. %K A338393 nonn %O A338393 1,1 %A A338393 _Bernard Schott_, Oct 28 2020 %E A338393 More terms from _Amiram Eldar_, Oct 28 2020