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A252775
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Number of (n+2)X(5+2) 0..3 arrays with every consecutive three elements in every row, column and nw-se diagonal having exactly two distinct values, and new values 0 upwards introduced in row major order
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0
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105956, 649951, 5171516, 51149836, 585983612, 7366218679, 96519311021, 1318593973312, 18614939625457, 261411809310694, 3728658894119462, 53987086595448388, 770273033701489733, 11096551704475073196
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=1
..0..1..1..0..1..0..0....0..1..0..0..2..2..0....0..0..1..0..1..1..0
..1..2..2..0..0..3..0....0..2..0..2..0..0..1....2..0..2..0..2..2..0
..1..2..2..1..1..3..1....3..2..2..0..2..2..0....2..2..1..2..1..2..1
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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