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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.

A209044 Number of nX5 0..3 arrays with no element equal the average of immediate neighbors vertically above and horizontally left of it.

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%I A209044 #7 Jul 22 2025 21:36:06
%S A209044 324,143212,64369764,28964458546,13034933066892,5866193355938718,
%T A209044 2640002203816927226,1188097914449381928076,534687682738799964386512,
%U A209044 240629088538426121775581624,108291924647368035417996430328
%N A209044 Number of nX5 0..3 arrays with no element equal the average of immediate neighbors vertically above and horizontally left of it.
%C A209044 Column 5 of A209047
%H A209044 R. H. Hardin, <a href="/A209044/b209044.txt">Table of n, a(n) for n = 1..210</a>
%e A209044 Some solutions for n=4
%e A209044 ..0..1..3..0..1....1..0..3..0..3....1..3..2..3..0....2..0..3..0..2
%e A209044 ..1..2..0..2..2....2..2..3..2..2....2..2..1..1..0....0..3..1..1..2
%e A209044 ..2..0..3..2..3....3..2..3..2..3....1..1..2..2..2....1..3..0..1..0
%e A209044 ..0..2..3..3..0....0..2..1..2..1....0..0..3..0..0....3..2..2..1..2
%K A209044 nonn
%O A209044 1,1
%A A209044 _R. H. Hardin_ Mar 04 2012