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A183750 Number of (n+1) X 2 0..3 arrays with equal numbers of 2 X 2 subblocks with sum over 6 and with sum under 6. 1

%I

%S 44,888,8816,193360,2176856,36036868,491791680,7982788196,

%T 115288342048,1803848495856,27040300367560,421049515254172,

%U 6423126163964616,99760622173747556,1537503104661585488,23911589506997353600

%N Number of (n+1) X 2 0..3 arrays with equal numbers of 2 X 2 subblocks with sum over 6 and with sum under 6.

%C Column 1 of A183756.

%H R. H. Hardin, <a href="/A183750/b183750.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 3 X 2:

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

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

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

%e ...

%e ...P.......P.......M.......P.......P.......M.......M.......M.......E.......P...

%e ...M.......M.......P.......M.......M.......P.......P.......P.......E.......M...

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 06 2011

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Last modified December 3 14:51 EST 2020. Contains 338906 sequences. (Running on oeis4.)