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Number of (n+1)X7 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum

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`%I #4 Mar 31 2012 12:36:03
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`%S 1296000,190416934,27239862108,4212755548948,641850855452998
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`%N Number of (n+1)X7 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum
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`%C Column 6 of A185777
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`%e Some solutions for 3X7
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`%e ..0..0..1..2..0..2..2....0..0..1..1..2..1..0....0..0..1..0..2..1..2
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`%e ..0..1..0..0..0..2..2....0..2..0..2..2..0..0....0..0..0..2..1..2..0
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`%e ..0..1..1..1..0..0..2....0..1..1..2..2..0..2....0..1..1..1..2..2..2
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`%K nonn
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`%O 1,1
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`%A _R. H. Hardin_ Feb 03 2011
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