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A222605 Number of nX2 0..3 arrays with exactly floor(nX2/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..3 order 1

%I

%S 0,6,32,520,4556,57072,594544,6958016,77112256,888878720,10094914368,

%T 116306178816,1336001507840,15439492158976,178494573538304,

%U 2069940863792128,24032638451858432,279564150926585856

%N Number of nX2 0..3 arrays with exactly floor(nX2/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..3 order

%C Column 2 of A222608

%H R. H. Hardin, <a href="/A222605/b222605.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=3

%e ..0..1....0..0....0..1....0..1....0..1....0..1....0..1....0..1....0..1....0..1

%e ..2..2....0..1....1..2....0..2....1..2....0..0....2..0....2..2....2..1....2..0

%e ..2..0....2..3....0..1....0..1....3..1....1..2....0..1....3..2....1..3....0..3

%K nonn

%O 1,2

%A _R. H. Hardin_ Feb 26 2013

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Last modified October 22 01:48 EDT 2021. Contains 348160 sequences. (Running on oeis4.)