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 A233300 #5 Jul 23 2025 07:58:54
%S A233300 34,232,1986,21957,239330,2694620,30257296,338790472,3761876941,
%T A233300 41492573432
%N A233300 Number of (n+1)X(4+1) 0..1 arrays x(i,j) with row sums sum{x(i,j), j=1..4+1} nondecreasing, and column sums sum{i^2*x(i,j), i=1..n+1} nondecreasing.
%C A233300 Column 4 of A233301
%e A233300 Some solutions for n=5
%e A233300 ..0..0..0..0..0....0..0..0..0..0....0..0..1..0..1....0..0..0..1..1
%e A233300 ..0..0..1..0..0....0..0..1..1..1....0..0..1..0..1....0..1..1..0..0
%e A233300 ..1..0..0..1..1....0..1..0..1..1....1..1..0..0..0....1..0..0..1..0
%e A233300 ..1..0..1..0..1....0..1..1..1..1....1..0..1..0..1....0..0..1..1..0
%e A233300 ..0..0..1..1..1....1..0..1..1..1....0..0..1..1..1....1..0..0..0..1
%e A233300 ..0..1..0..1..1....1..1..1..1..1....0..1..0..1..1....0..1..1..1..1
%K A233300 nonn
%O A233300 1,1
%A A233300 _R. H. Hardin_, Dec 07 2013