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 A208432 #7 Jun 02 2025 07:44:53 %S A208432 122,3456,4155,32813,365195,3673572,36422648,371453021,3793404050, %T A208432 38533409422,391811506309,3988721278761,40593813655965, %U A208432 413056518517661,4203452149533013,42777575164793479,435327190739395292 %N A208432 Number of nX6 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any knight-move neighbor (colorings ignoring permutations of colors). %C A208432 Column 6 of A208434 %H A208432 R. H. Hardin, <a href="/A208432/b208432.txt">Table of n, a(n) for n = 1..210</a> %e A208432 Some solutions for n=4 %e A208432 ..0..1..0..1..1..2....0..1..1..0..1..2....0..0..0..0..0..0....0..1..2..1..1..1 %e A208432 ..1..0..2..0..2..0....0..1..2..0..0..2....1..2..1..1..1..2....0..2..2..0..1..2 %e A208432 ..0..2..0..2..0..2....0..2..2..0..1..2....2..2..2..1..2..2....0..1..2..0..0..2 %e A208432 ..1..0..2..1..2..0....0..1..2..1..1..2....1..2..0..0..0..2....0..1..1..0..1..2 %K A208432 nonn %O A208432 1,1 %A A208432 _R. H. Hardin_ Feb 26 2012