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 A024203 #9 Jun 24 2019 04:02:55
%S A024203 6,67,337,1171,3250,7739,16467,32145,58609,101099,166559,263975,
%T A024203 404740,603049,876320,1245656,1736324,2378274,3206681,4262522,5593180,
%U A024203 7253080,9304353,11817531,14872272,18558116,22975270,28235420,34462582
%N A024203 [ (4th elementary symmetric function of S(n))/(first elementary symmetric function of S(n)) ], where S(n) = {first n+3 odd positive integers}.
%F A024203 a(n) = floor(A024198(n)/(n+3)^2). - _Sean A. Irvine_, Jun 24 2019
%K A024203 nonn
%O A024203 1,1
%A A024203 _Clark Kimberling_