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 A192599 #17 Jan 26 2023 12:16:30 %S A192599 1,2,9,8,6,35,54,10,104,54,135,24,209,64,70,90,350,405,72,154,594,190, %T A192599 740,64,819,280,216,330,989,54,1274,504,22,1595,256,1710,640,714,270, %U A192599 2079,874,2345,648,56,2484,90,2925,1144,286,3239,1450,3740,1560,216,832,4464,1914,4850,280,320,5049 %N A192599 Let N = pq (p<q) = A006881(n). Then a(n) = | (p^2-q)(q-1)/2 |. %C A192599 This is the area of the triangle with vertices (1,p), (p,q), (q,pq). %C A192599 A200050 gives the record values. [_Arkadiusz Wesolowski_, Apr 18 2012] %e A192599 For p*q=3*5=15, |(3^2 + 5^2 - 5*(3^2 +1))/2| = 8 %K A192599 nonn %O A192599 1,2 %A A192599 _J. M. Bergot_, Jul 04 2011 %E A192599 Definition simplified by _N. J. A. Sloane_, Jul 10 2011