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 A047730 #13 Jul 08 2023 20:07:19
%S A047730 1,3,13,76,521,3996,32923,286202,2590347,24203935,232050202,
%T A047730 2272449745,22653570386,229274897514,2350933487206,24381053759852,
%U A047730 255382755251622,2698732882975782,28743579211912338
%N A047730 Number of score sequences in tournament with n players, when 4 points are awarded in each game.
%D A047730 P. A. MacMahon, Chess tournaments and the like treated by the calculus o symmetric functions, Coll. Papers I, MIT Press, 344-375.
%H A047730 Qihao Ye, <a href="/A047730/b047730.txt">Table of n, a(n) for n = 1..928</a>
%H A047730 <a href="/index/To#tournament">Index entries for sequences related to tournaments</a>
%F A047730 Nonnegative integer points (p_1, p_2, ..., p_n) in polytope p_0=p_{n+1}=0, 2p_i -(p_{i+1}+p_{i-1}) <= 4, p_i >= 0, i=1, ..., n.
%Y A047730 Cf. A000571, A007747, A047729, A064626, A064422.
%K A047730 nonn
%O A047730 1,2
%A A047730 _David W. Wilson_