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 A218763 #6 Jul 23 2025 00:03:45 %S A218763 21,373,8697,170148,3488015,70915451,1444700004,29426750811, %T A218763 599056249102,12196183065261,248303130737344,5055219016095223, %U A218763 102918285280874701,2095289674633493599,42657543159685926011,868455498699347842027 %N A218763 Unmatched value maps: number of nX6 binary arrays indicating the locations of corresponding elements not equal to any horizontal or vertical neighbor in a random 0..1 nX6 array. %C A218763 Column 6 of A218765 %H A218763 R. H. Hardin, <a href="/A218763/b218763.txt">Table of n, a(n) for n = 1..17</a> %e A218763 Some solutions for n=3 %e A218763 ..1..0..0..0..0..0....1..0..1..1..0..1....0..0..0..1..1..1....1..1..0..0..1..1 %e A218763 ..0..1..0..1..1..0....0..0..0..0..0..0....0..0..1..1..1..1....1..0..0..1..1..0 %e A218763 ..0..0..0..0..0..0....0..0..0..0..0..1....1..1..1..1..1..1....0..0..0..0..0..0 %K A218763 nonn %O A218763 1,1 %A A218763 _R. H. Hardin_ Nov 05 2012