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 A332923 #5 Mar 02 2020 18:53:41 %S A332923 32,34,35,35,36,40,42,44,45,54,55,56,56,63,64,68,70,76,76,77,80,84,87, %T A332923 90,91,91,104,115,119,130,132,140,146,161,165,196,208,220,230,301,399, %U A332923 410,520,741,1406 %N A332923 2*a(n) are the perimeters of distinct triangles with integer sides i <= j <= k, whose area equals 3 times their perimeter. Terms occurring more than once belong to different triangles. %C A332923 There are 45 integer-sided triangles with 3*area = perimeter, with terms 35, 56, 76, and 91 corresponding to pairs of such triangles with different sides. %Y A332923 The 41 terms of A289219, divided by 6, are all terms of this sequence, but omitting distinct triangles with identical perimeters. %K A332923 nonn,fini,full %O A332923 1,1 %A A332923 _Hugo Pfoertner_, Mar 02 2020