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 A219148 #5 Jul 23 2025 00:16:49 %S A219148 1,1157,25277,472638,9702349,191707377,3862325048,78006637065, %T A219148 1583568237267,32151936434405 %N A219148 Unchanging value maps: number of 7Xn binary arrays indicating the locations of corresponding elements unequal to no horizontal, diagonal or antidiagonal neighbor in a random 0..2 7Xn array. %C A219148 Row 7 of A219142 %e A219148 Some solutions for n=3 %e A219148 ..1..1..1....1..0..0....0..0..1....1..0..0....1..1..1....0..0..0....0..0..1 %e A219148 ..1..0..1....1..0..1....0..0..1....0..0..0....1..0..1....0..1..0....0..0..0 %e A219148 ..1..0..0....0..0..1....0..0..1....0..0..1....0..0..0....1..1..1....1..0..0 %e A219148 ..0..0..1....1..0..0....0..0..0....1..0..1....1..0..0....1..1..1....0..0..0 %e A219148 ..1..0..0....1..0..0....1..0..0....0..0..0....1..0..1....0..0..0....1..0..0 %e A219148 ..0..0..0....0..0..1....1..0..0....0..0..0....0..0..0....0..0..0....1..0..0 %e A219148 ..1..0..0....0..0..1....1..0..0....0..0..0....1..0..0....0..0..0....0..0..1 %K A219148 nonn %O A219148 1,2 %A A219148 _R. H. Hardin_ Nov 12 2012