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 A200900 #6 Jul 22 2025 15:59:57 %S A200900 20,1483,142698,18172239,2162004143 %N A200900 Number of nX6 0..5 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other. %C A200900 Column 6 of A200902 %e A200900 Some solutions for n=3 %e A200900 ..0..0..1..3..1..2....0..0..0..1..1..2....0..0..0..1..2..1....0..0..0..1..2..1 %e A200900 ..0..2..3..3..2..5....2..2..3..3..4..4....1..3..2..4..4..5....2..2..5..3..4..5 %e A200900 ..1..5..4..4..4..5....1..5..3..5..5..4....2..4..3..3..5..5....1..3..3..5..4..4 %K A200900 nonn %O A200900 1,1 %A A200900 _R. H. Hardin_ Nov 23 2011