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A251349
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Number of (n+1)X(6+1) 0..2 arrays with every 2X2 subblock summing to 3 4 or 5
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1
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445797, 113445117, 30455338423, 8328173688589, 2290637311033759, 631348219277725029, 174138621993095863507, 48043735135513953384297, 13256245686501694671116911, 3657801666276439248373460879
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