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 A280232 #4 Dec 29 2016 11:49:41 %S A280232 15,42,95,678,3376,16282,80825,377706,1780344,8321484,38431266, %T A280232 177322266,812861536,3712259660,16906747879,76738963064,347459922194, %U A280232 1569637145558,7075367986446,31833804360316,142976818494750,641124031114626 %N A280232 Number of nX7 0..1 arrays with no element unequal to a strict majority of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. %C A280232 Column 7 of A280233. %H A280232 R. H. Hardin, <a href="/A280232/b280232.txt">Table of n, a(n) for n = 1..210</a> %e A280232 Some solutions for n=4 %e A280232 ..0..0..0..0..1..1..1. .0..0..0..1..1..1..1. .0..0..0..0..0..0..0 %e A280232 ..0..0..0..0..1..1..1. .1..0..0..1..1..1..1. .0..0..0..0..0..1..1 %e A280232 ..1..1..0..0..0..1..1. .0..0..0..0..1..1..1. .1..1..0..0..1..1..1 %e A280232 ..1..1..1..0..0..1..1. .0..0..0..0..1..1..1. .1..1..1..1..1..1..1 %Y A280232 Cf. A280233. %K A280232 nonn %O A280232 1,1 %A A280232 _R. H. Hardin_, Dec 29 2016