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 A279734 #10 Apr 15 2024 17:56:04 %S A279734 0,2,35,736,29140,2407152,413326300,151323545378,119347643570782, %T A279734 203229304788874114,751402813331642186551 %N A279734 Number of n X n 0..1 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. %C A279734 Diagonal of A279741. %e A279734 Some solutions for n=4: %e A279734 ..0..1..0..1. .0..1..0..1. .0..0..1..0. .0..1..0..1. .0..1..0..1 %e A279734 ..0..1..0..1. .1..1..0..1. .1..0..0..1. .0..1..0..1. .0..1..0..1 %e A279734 ..1..0..1..0. .0..1..0..1. .0..1..1..0. .1..0..1..0. .1..0..1..1 %e A279734 ..0..0..1..0. .0..1..0..1. .1..0..1..0. .1..1..0..1. .0..1..0..1 %Y A279734 Cf. A279741. %K A279734 nonn,more %O A279734 1,2 %A A279734 _R. H. Hardin_, Dec 18 2016