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 A219416 #5 Jul 23 2025 00:26:19 %S A219416 1,1897,326233,27345143,2543481662,259468310384,26219581585508, %T A219416 2620294273035729 %N A219416 Unmatched value maps: number of 7Xn binary arrays indicating the locations of corresponding elements not equal to any horizontal or antidiagonal neighbor in a random 0..2 7Xn array. %C A219416 Row 7 of A219410 %e A219416 Some solutions for n=3 %e A219416 ..0..0..0....0..0..0....0..0..1....0..0..1....0..0..0....0..0..0....0..0..0 %e A219416 ..1..0..0....0..0..1....0..1..1....0..0..1....1..0..1....1..0..0....1..0..0 %e A219416 ..1..1..0....0..0..1....1..0..0....1..0..1....0..0..1....1..0..1....1..0..1 %e A219416 ..1..0..1....0..0..0....0..1..1....0..0..1....0..0..0....1..0..0....0..1..1 %e A219416 ..1..0..0....0..0..0....1..1..1....1..1..1....1..0..0....0..0..0....0..0..0 %e A219416 ..0..0..0....0..0..0....0..0..0....1..0..0....0..0..1....1..0..1....1..0..0 %e A219416 ..1..0..1....0..0..1....0..0..0....0..1..1....0..1..1....0..0..0....1..1..1 %K A219416 nonn %O A219416 1,2 %A A219416 _R. H. Hardin_ Nov 19 2012