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 A219139 #5 Jul 23 2025 00:15:57 %S A219139 12,96,1072,10505,101600,989947,9702349,94937311,927766394,9067631046, %T A219139 88653591037,866785617482,8474253980191,82848823383647,809985234784217 %N A219139 Unchanging value maps: number of nX5 binary arrays indicating the locations of corresponding elements unequal to no horizontal, diagonal or antidiagonal neighbor in a random 0..2 nX5 array. %C A219139 Column 5 of A219142 %e A219139 Some solutions for n=3 %e A219139 ..1..1..0..1..0....0..0..0..1..0....0..0..0..0..1....1..1..0..0..0 %e A219139 ..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..1..0..1..0 %e A219139 ..0..0..0..0..0....1..0..0..1..0....1..0..0..0..1....0..0..0..0..0 %K A219139 nonn %O A219139 1,1 %A A219139 _R. H. Hardin_ Nov 12 2012