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A222766 Number of nX5 0..1 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.

%I A222766 #6 Jul 23 2025 03:02:17
%S A222766 4,18,158,2608,19766,333978,2645385,45830457,370518626,6504289924,
%T A222766 53224723750,942396671062,7774316625479,138492173604656,
%U A222766 1149166452333809,20564313304270211,171388475477573948,3077759439903425070
%N A222766 Number of nX5 0..1 arrays with exactly floor(nX5/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order.
%C A222766 Column 5 of A222769
%H A222766 R. H. Hardin, <a href="/A222766/b222766.txt">Table of n, a(n) for n = 1..205</a>
%e A222766 Some solutions for n=3
%e A222766 ..0..1..0..0..1....0..1..0..1..1....0..0..0..0..0....0..0..0..1..1
%e A222766 ..0..0..0..0..0....1..1..1..1..1....0..0..0..1..0....0..0..0..1..1
%e A222766 ..0..0..0..0..0....1..1..1..1..0....0..1..0..0..0....0..0..0..1..0
%K A222766 nonn
%O A222766 1,1
%A A222766 _R. H. Hardin_ Mar 05 2013