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A251250
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Number of (n+1)X(n+1) 0..1 arrays with every 2X2 subblock having a single 1 or two 1s on the same edge
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1
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8, 56, 464, 9130, 185620, 10753448, 539961360, 93638134256, 11614033584212, 6069296782136816, 1858635679067134948, 2934840645254762222638, 2219326155667975726270428, 10595742529538275240832027216
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OFFSET
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1,1
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COMMENTS
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Diagonal of A251258
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..17
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EXAMPLE
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Some solutions for n=4
..1..0..1..0..1....1..1..1..1..1....0..0..1..1..1....0..0..1..0..1
..0..0..1..0..1....0..0..0..0..0....1..0..0..0..0....1..0..0..0..0
..1..0..1..0..1....1..0..1..0..1....0..0..1..0..1....1..0..1..0..1
..1..0..0..0..0....1..0..1..0..1....1..0..1..0..1....1..0..0..0..0
..0..0..1..0..1....0..0..1..0..0....1..0..0..0..0....0..0..1..1..1
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CROSSREFS
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Sequence in context: A027081 A093134 A001398 * A087290 A086787 A218125
Adjacent sequences: A251247 A251248 A251249 * A251251 A251252 A251253
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Dec 01 2014
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STATUS
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approved
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