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 A348286 #11 Dec 05 2021 10:58:04 %S A348286 26,41,46,49,61,66,81,82,101,109,129,141,145,163,170,177,186,201,204, %T A348286 209,217,218,225,244,248,253,257,266,280,289,290,302,316,325,329,341, %U A348286 342,343,352,353,356,361,375,378,381,386,389,401,409,417,419,431,433,436,442,449,451,465 %N A348286 Numbers k such that there exists 0 < a, b, c, d, e, f < k such that a + b = c + d = e + f and a*b = c*k + d , c*d = e*k + f. %e A348286 For k = 26, a = 10, b = 15, c = 5, d = 20, e = 3, f = 22, %e A348286 and 10*15 = 5*26 + 20, 5*20 = 3*26 + 22, 10 + 15 = 5 + 20 = 3 + 22. %K A348286 nonn,easy %O A348286 1,1 %A A348286 _Naohiro Nomoto_, Oct 10 2021