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 A331209 #9 Feb 16 2025 08:33:59 %S A331209 6,12,12,30,24,60,60,84,66,84,120,126,84,60,168,132,204,210,84,114, %T A331209 156,180,252,360,264,420,420,468,306,330,504,456,420,630,720,780,660, %U A331209 408,630,660,1020,456,924,1170,840,1260,984,924,1020,1290,522,1320,420,1092,1116,1710 %N A331209 Largest possible area of a primitive Heronian triangle with perimeter A096468(n). %H A331209 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HeronianTriangle.html">Heronian Triangle</a> %H A331209 Wikipedia, <a href="https://en.wikipedia.org/wiki/Heronian_triangle">Heronian triangle</a> %H A331209 Wikipedia, <a href="https://en.wikipedia.org/wiki/Integer_triangle">Integer Triangle</a> %e A331209 a(1) = 6; there is one primitive Heronian triangle with perimeter A096468(1) = 12, which is [3,4,5] and its area is 6. %e A331209 a(6) = 60; there are two primitive Heronian triangles with perimeter A096468(6) = 36, [9,10,17] and [10,13,13] with areas 36 and 60. The largest of these is 60. %Y A331209 Cf. A096468. %K A331209 nonn %O A331209 1,1 %A A331209 _Wesley Ivan Hurt_, May 03 2020