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A253728
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Number of (n+1)X(4+1) 0..2 arrays with every 2X2 subblock diagonal maximum minus antidiagonal maximum unequal to its neighbors horizontally and vertically
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1
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23524, 1076964, 57696638, 3121388776, 161854461064, 8663276276434, 450354383773758, 24027672779181962, 1252290220556546196, 66663348504748366256, 3481436132211993145986, 184985706254787405564169
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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
..2..1..0..1..0....0..2..2..1..1....2..0..0..2..1....0..0..2..0..2
..1..1..0..0..1....1..0..0..2..0....1..1..0..0..1....0..0..0..1..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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