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 A200828 #8 Jul 22 2025 15:57:47 %S A200828 679,96511,11757774,1307781737,136335515996,13551445405790, %T A200828 1303531416951055,122329194886388656,11265061632847653047 %N A200828 Number of nX5 0..5 arrays with every row and column running average nondecreasing rightwards and downwards. %C A200828 Column 5 of A200831 %e A200828 Some solutions for n=3 %e A200828 ..0..0..0..0..2....0..0..0..3..2....0..0..0..2..3....0..0..0..1..4 %e A200828 ..0..0..0..2..4....0..0..0..4..3....0..0..0..4..4....0..0..0..2..5 %e A200828 ..0..2..4..5..5....0..1..3..5..3....0..0..5..3..4....0..2..3..2..5 %K A200828 nonn %O A200828 1,1 %A A200828 _R. H. Hardin_ Nov 23 2011