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 A221039 #5 Jul 23 2025 01:39:10 %S A221039 1,200,10648,345755,12239631,393788081,12843452050,407831788165 %N A221039 Majority value maps: number of 5Xn binary arrays indicating the locations of corresponding elements equal to at least half of their horizontal and antidiagonal neighbors in a random 0..2 5Xn array. %C A221039 Row 5 of A221035 %e A221039 Some solutions for n=3 %e A221039 ..1..0..0....1..0..0....1..0..0....0..0..0....1..0..0....0..0..1....1..1..1 %e A221039 ..1..0..1....1..1..1....0..1..1....1..0..0....1..1..0....0..1..1....1..1..1 %e A221039 ..0..1..1....1..0..1....1..1..0....1..0..0....1..0..0....0..1..1....0..1..0 %e A221039 ..1..0..0....0..0..1....1..0..1....1..1..1....0..0..1....0..0..1....1..0..0 %e A221039 ..0..0..1....0..0..1....0..0..0....1..1..0....1..0..0....1..1..0....1..1..1 %K A221039 nonn %O A221039 1,2 %A A221039 _R. H. Hardin_ Dec 29 2012