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 A334758 #7 Jun 18 2020 14:11:48 %S A334758 12,24,30,36,40,48,56,120,70,72,80,168,180,96,108,112,360,126,264,140, %T A334758 288,150,154,156,160,504,176,540,182,192,198,200,204,208,420,216,220, %U A334758 224,228,234,960,756,260,528,540,276,840,286,576,600,306,308,624,320,324,660,1008 %N A334758 Sum of the perimeters of all Pythagorean triangles with perimeter A010814(n). %H A334758 Wikipedia, <a href="https://en.wikipedia.org/wiki/Integer_triangle">Integer Triangle</a> %H A334758 <a href="/index/Ps#PyTrip">Index entries related to Pythagorean Triples.</a> %e A334758 a(1) = 12; There is one integer-sided right triangle with perimeter A010814(1) = 12, [3,4,5]. %e A334758 a(2) = 8; There is one integer-sided right triangle with perimeter A010814(2) = 24, [6,8,10]. %Y A334758 Cf. A005044, A010814, A334607, A334678, A334717. %K A334758 nonn %O A334758 1,1 %A A334758 _Wesley Ivan Hurt_, May 10 2020