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A233643
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Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 2
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1
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57456, 3277236, 170872144, 9797170648, 531400908604, 30250564851612, 1663637150636064, 94103848836813810, 5210457711411390232, 293448968580448326270, 16310213444182983776468, 916027510756160768424320
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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
..1..1..1..1..1..1..1..2....1..1..1..2..1..1..0..1....1..1..1..0..1..0..0..1
..1..0..0..1..2..2..1..1....0..0..1..1..1..0..0..0....2..1..0..0..1..1..0..0
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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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