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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.

A201215 Number of nX7 0..3 arrays with every row and column running average nondecreasing rightwards and downwards.

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%I A201215 #6 Jul 22 2025 16:09:41
%S A201215 488,44858,3216277,198262359,11689716107,671706552402,37432954261477,
%T A201215 2020620825251740
%N A201215 Number of nX7 0..3 arrays with every row and column running average nondecreasing rightwards and downwards.
%C A201215 Column 7 of A201216
%e A201215 Some solutions for n=2
%e A201215 ..0..2..1..2..3..3..3....0..0..0..0..0..0..1....0..0..0..2..2..2..1
%e A201215 ..2..2..2..3..3..3..3....0..1..3..3..3..2..3....1..1..1..2..3..2..3
%K A201215 nonn
%O A201215 1,1
%A A201215 _R. H. Hardin_ Nov 28 2011

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