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A237031 Number of (n+1)X(4+1) 0..2 arrays with the maximum of every 2X2 subblock equal 1

%I #4 Feb 02 2014 12:21:40

%S 30045,4552617,638436002,93104881597,13403891066319,1939706609440732,

%T 280172591227575985,40497311726696094149,5852090517167756717290,

%U 845745023461417965044873,122222609677627142874842731

%N Number of (n+1)X(4+1) 0..2 arrays with the maximum of every 2X2 subblock equal

%C Column 4 of A237035

%H R. H. Hardin, <a href="/A237031/b237031.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 120*a(n-1) +6153*a(n-2) -363748*a(n-3) -3957016*a(n-4) +306155172*a(n-5) -1955225983*a(n-6) -32438472776*a(n-7) +200128530735*a(n-8) +1410935167008*a(n-9) -3399280459696*a(n-10) -9790743035136*a(n-11) +31593008567296*a(n-12) -23604586610688*a(n-13) -806694420480*a(n-14) +4431324119040*a(n-15)

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Feb 02 2014

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