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 A222364 #6 Jul 23 2025 02:31:38 %S A222364 1,1,1,4,5,14,17,70,89,326,413,1630,2089,8058,10349,40598,52385, %T A222364 204914,265061,1041934,1351369,5315674,6908045,27228710,35450225, %U A222364 139873618,182386933,720480478,940751513,3719466954,4862439261,19240428310 %N A222364 Number of nX1 0..2 arrays with no more than floor(nX1/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..2 order. %C A222364 Column 1 of A222371 %H A222364 R. H. Hardin, <a href="/A222364/b222364.txt">Table of n, a(n) for n = 1..210</a> %e A222364 All solutions for n=4 %e A222364 ..0....0....0....0 %e A222364 ..1....0....0....0 %e A222364 ..1....0....1....0 %e A222364 ..1....1....1....0 %K A222364 nonn %O A222364 1,4 %A A222364 _R. H. Hardin_ Feb 17 2013