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 A219414 #6 Jul 23 2025 00:26:05 %S A219414 1,200,7687,181089,4560446,121641579,3227238239,85112947762, %T A219414 2245268308652,59261110503227,1564126144398995,41281591776574486, %U A219414 1089532969597092827,28755799092752402466,758945504939672363597 %N A219414 Unmatched value maps: number of 5Xn binary arrays indicating the locations of corresponding elements not equal to any horizontal or antidiagonal neighbor in a random 0..2 5Xn array. %C A219414 Row 5 of A219410 %H A219414 R. H. Hardin, <a href="/A219414/b219414.txt">Table of n, a(n) for n = 1..22</a> %e A219414 Some solutions for n=3 %e A219414 ..0..0..1....1..0..0....0..0..1....0..0..0....1..1..1....1..1..0....1..1..1 %e A219414 ..0..0..0....1..0..0....1..0..1....0..0..0....1..1..1....0..0..0....1..1..1 %e A219414 ..1..0..0....1..0..0....0..0..0....1..0..1....0..0..1....1..1..0....1..1..0 %e A219414 ..0..1..0....0..0..1....0..1..0....0..1..0....0..1..1....0..0..0....0..0..0 %e A219414 ..0..0..1....0..0..1....1..0..1....0..0..1....1..1..1....1..0..1....0..1..1 %K A219414 nonn %O A219414 1,2 %A A219414 _R. H. Hardin_ Nov 19 2012