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A222604 Number of nX1 0..3 arrays with exactly floor(nX1/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..3 order 5

%I

%S 1,0,0,6,20,20,70,685,2808,5370,21294,123410,514792,1341616,5472216,

%T 25106526,105042770,321557310,1329068686,5447475968,22826820144,

%U 76079350800,316839140020,1228204709225,5153985361728,17971182592538

%N Number of nX1 0..3 arrays with exactly floor(nX1/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..3 order

%C Column 1 of A222608

%H R. H. Hardin, <a href="/A222604/b222604.txt">Table of n, a(n) for n = 1..210</a>

%K nonn

%O 1,4

%A _R. H. Hardin_ Feb 26 2013

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Last modified September 27 15:44 EDT 2021. Contains 347691 sequences. (Running on oeis4.)