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A185612
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Number of (n+1)X4 0..2 arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum
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1
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361, 24993, 554305, 16830089, 455401149, 13132512119, 367637937923, 10506617192993, 296987801260129, 8464347660715807, 240114023418741889, 6835977634553467489, 194207139150443251969, 5526371145953118444347
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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 3X4
..2..1..2..0....0..1..1..2....1..2..2..2....0..0..0..2....1..0..2..0
..2..2..2..1....2..0..1..1....1..1..1..1....0..1..0..1....1..0..2..1
..1..1..1..1....1..1..2..1....2..1..0..1....1..0..1..1....0..1..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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