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 A219439 #6 Jul 23 2025 00:27:33 %S A219439 21,225,4033,57249,844553,12323337,180983751,2656615237,38958452805, %T A219439 571246999054,8377493560653,122869945358060,1802067766211909, %U A219439 26429403407143030,387617125521945071,5684873531729895393 %N A219439 Unmatched value maps: number of nX6 binary arrays indicating the locations of corresponding elements not equal to any horizontal, diagonal or antidiagonal neighbor in a random 0..1 nX6 array. %C A219439 Column 6 of A219441 %H A219439 R. H. Hardin, <a href="/A219439/b219439.txt">Table of n, a(n) for n = 1..33</a> %e A219439 Some solutions for n=3 %e A219439 ..1..0..0..1..0..0....0..0..0..1..0..1....1..0..0..1..0..1....1..0..0..0..0..0 %e A219439 ..1..0..0..1..0..1....1..0..0..0..0..1....0..0..0..0..0..0....0..0..1..0..0..0 %e A219439 ..0..0..0..1..1..1....0..0..1..0..0..0....0..1..0..1..0..0....1..0..1..1..0..0 %K A219439 nonn %O A219439 1,1 %A A219439 _R. H. Hardin_ Nov 20 2012