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 A200533 #7 Jul 22 2025 15:51:24 %S A200533 87,1873,32556,494555,6820330,87098434,1056792824,12348422785, %T A200533 140068079857,1551453118671,16861973522704,180469353488204, %U A200533 1907201493832312,19944555935687461,206749466424763994 %N A200533 Number of nX7 0..2 arrays with every row and column running average nondecreasing rightwards and downwards. %C A200533 Column 7 of A200534 %H A200533 R. H. Hardin, <a href="/A200533/b200533.txt">Table of n, a(n) for n = 1..19</a> %e A200533 Some solutions for n=4 %e A200533 ..0..0..0..0..0..0..2....0..0..0..1..1..1..2....0..0..0..0..0..1..1 %e A200533 ..0..0..0..0..0..1..2....0..0..0..1..1..1..2....0..0..0..0..1..2..2 %e A200533 ..0..0..0..1..1..2..2....0..0..0..1..1..2..2....0..0..0..2..1..2..2 %e A200533 ..0..2..2..2..2..2..2....0..1..1..1..2..2..2....0..2..1..1..2..2..2 %K A200533 nonn %O A200533 1,1 %A A200533 _R. H. Hardin_ Nov 18 2011