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 A200830 #8 Jul 22 2025 15:58:01 %S A200830 6235,5112134,3568229516,2243416408567,1303531416951055 %N A200830 Number of nX7 0..5 arrays with every row and column running average nondecreasing rightwards and downwards. %C A200830 Column 7 of A200831 %e A200830 Some solutions for n=3 %e A200830 ..0..0..0..0..0..2..1....0..0..0..0..1..2..1....0..0..0..0..0..1..1 %e A200830 ..0..0..0..0..3..3..4....0..0..0..0..1..2..2....0..0..0..0..0..3..3 %e A200830 ..0..0..0..0..3..5..4....0..0..0..0..2..5..2....0..0..0..0..3..5..4 %K A200830 nonn %O A200830 1,1 %A A200830 _R. H. Hardin_ Nov 23 2011