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 A201214 #6 Jul 22 2025 16:09:34 %S A201214 233,12314,512681,18624423,638359663,21062625664,671706552402, %T A201214 20756983300265,624562355419649,18382517638082006,531236200468061769, %U A201214 15113072656159194185,424027010031462876498 %N A201214 Number of nX6 0..3 arrays with every row and column running average nondecreasing rightwards and downwards. %C A201214 Column 6 of A201216 %e A201214 Some solutions for n=2 %e A201214 ..0..0..3..2..2..2....0..2..1..1..1..1....1..1..1..2..2..3....0..1..1..1..1..1 %e A201214 ..1..1..3..3..2..3....0..2..2..2..3..3....2..2..2..2..3..3....0..1..3..3..2..3 %K A201214 nonn %O A201214 1,1 %A A201214 _R. H. Hardin_ Nov 28 2011