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 A233064 #6 Jul 23 2025 07:50:28
%S A233064 33,161,723,2875,10650,36674,119979,373955,1122568,3255885,9181781,
%T A233064 25238126,67893216,179078191,464403265,1185772147,2986754467,
%U A233064 7429480493,18276519761,44500586535,107358553904,256796921471,609508203405
%N A233064 Number of (3+1)X(n+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..n+1} nondecreasing, and column sums sum{i*x(i,j), i=1..3+1} nondecreasing.
%C A233064 Row 3 of A233062
%H A233064 R. H. Hardin, <a href="/A233064/b233064.txt">Table of n, a(n) for n = 1..48</a>
%e A233064 Some solutions for n=5
%e A233064 ..0..1..0..1..1..1....1..0..1..1..0..0....0..0..1..1..0..1....1..0..0..1..0..0
%e A233064 ..1..0..1..1..1..1....0..1..1..1..0..0....0..0..1..0..1..1....0..1..1..0..0..1
%e A233064 ..1..0..1..1..1..1....1..1..0..0..1..1....1..1..0..1..1..1....0..0..1..0..1..1
%e A233064 ..0..1..1..1..1..1....0..0..1..1..1..1....1..1..1..1..1..1....0..0..0..1..1..1
%K A233064 nonn
%O A233064 1,1
%A A233064 _R. H. Hardin_, Dec 03 2013