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 A331697 #7 Jan 26 2020 07:35:48 %S A331697 3,15,3,7,35,32,27,135,5,63,15,495,12,11,231,144,39,99,96,819,336,75, %T A331697 455,7,39,56,175,16,143,35,135,128,2975,27,15,675,384,51,495,320,2295, %U A331697 864,95,195,192,1683,720,4275,1440,147,1071,9,935,135,3591,20,663,27 %N A331697 Squared numerator of y-coordinate of 3rd point of the n-th triangle with integer sides in a sorted list corresponding to A331695. The y-coordinate is given by sqrt(a(n))/A331696(n). %e A331697 a(1) = 3 because the 3rd point of the smallest triangle with integer sides (1,1,1) is at (x,y)=(1/2,sqrt(3)/2), A331695(1)=1, A331696(1)=2. %e A331697 See A331695 for an extended list. %Y A331697 Cf. A316841. %Y A331697 Sides of triangle: A316843, A316844, A316845. %Y A331697 Cf. A331695, A331696. %K A331697 nonn %O A331697 1,1 %A A331697 _Hugo Pfoertner_, Jan 25 2020