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 A200774 #7 Jul 22 2025 15:55:44 %S A200774 9,37,77,1368,7725,13422,194535,980702,1678693,24878620,121356170, %T A200774 196370947,2842268794,13774086909,22130326801,315828107827, %U A200774 1502885737864,2383360502586,33977970254723,160775285120155,252353156923816 %N A200774 Number of nX5 0..2 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other. %C A200774 Column 5 of A200777 %H A200774 R. H. Hardin, <a href="/A200774/b200774.txt">Table of n, a(n) for n = 1..27</a> %e A200774 Some solutions for n=4 %e A200774 ..0..0..0..1..1....0..0..0..0..2....0..0..0..0..1....0..0..0..0..1 %e A200774 ..0..0..2..1..2....0..1..1..2..2....0..1..1..2..1....0..0..0..1..2 %e A200774 ..0..0..1..1..2....0..2..1..1..2....0..1..1..2..2....1..1..2..2..2 %e A200774 ..1..2..2..2..2....0..1..1..1..2....1..2..2..2..2....1..1..2..2..2 %K A200774 nonn %O A200774 1,1 %A A200774 _R. H. Hardin_ Nov 22 2011