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 A332922 #5 Mar 02 2020 18:53:35 %S A332922 21,24,27,30,33,36,39,42,42,45,60,66,75,81,99,105,171,306 %N A332922 2*a(n) are the perimeters of distinct triangles with integer sides i <= j <= k, whose area equals 2 times their perimeter. Terms occurring more than once belong to different triangles. %C A332922 There are 18 integer-sided triangles with 2*area = perimeter, with terms 42 corresponding to a pair of such triangles with different sides. %Y A332922 Equals A289218/2. %Y A332922 Cf. A289219, A289220, A289221, A332879, A289253 (all merging terms for triangles with identical perimeters, but different sides). %K A332922 nonn,fini,full %O A332922 1,1 %A A332922 _Hugo Pfoertner_, Mar 02 2020