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Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock summing to 2 4 or 6
1

%I #4 Dec 01 2014 19:19:01

%S 297057,17016861,1196729319,101704182219,9919268234529,

%T 1058556262797069,119455642968747047,13949234525976217235,

%U 1663357602303254905433,200912017723012996227481,24460705247632859451004015

%N Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock summing to 2 4 or 6

%C Column 7 of A251335

%H R. H. Hardin, <a href="/A251334/b251334.txt">Table of n, a(n) for n = 1..93</a>

%e Some solutions for n=1

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 01 2014