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A296642
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Number of nX7 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1, 2 or 4 neighboring 1s.
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1
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37, 2728, 89613, 3713779, 157255466, 6468185511, 267838310277, 11100574753607, 459672982178410, 19037726114800043, 788497459189867140, 32656946891818303362, 1352543183239264781440, 56018002075733378064056
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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=3
..1..1..1..0..0..1..0. .1..1..0..0..0..0..1. .0..0..0..0..0..1..1
..0..0..1..0..1..0..1. .0..0..0..1..0..0..1. .0..1..0..1..0..1..0
..0..1..0..0..1..1..0. .0..0..1..1..0..0..0. .0..1..1..0..1..1..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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