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A224560
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Number of (n+3)X(n+3) 0..1 matrices with each 4X4 subblock idempotent
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0
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452, 340, 514, 752, 974, 1550, 2526, 3918, 5716, 8536, 12978, 19670, 29226, 43204, 63992, 94856, 139914, 205488, 301196, 441124, 644948, 940908, 1370156, 1992618, 2894276, 4198330, 6081892, 8800132, 12719614, 18365760
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OFFSET
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1,1
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COMMENTS
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Diagonal of A224568
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LINKS
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Table of n, a(n) for n=1..30.
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EXAMPLE
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Some solutions for n=3
..1..1..1..1..0..1....0..1..0..0..0..0....0..0..0..0..0..0....1..1..1..1..1..1
..0..0..0..0..0..0....0..1..0..0..0..0....1..1..1..1..1..1....0..0..0..0..0..0
..0..0..0..0..0..0....0..1..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..0..0..0..0..0..0....0..1..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..0..0..0..0..0..0....0..1..0..0..0..1....0..0..0..0..0..0....0..0..0..0..0..0
..0..0..0..0..0..0....0..0..0..0..0..1....1..1..1..1..1..1....0..0..0..1..1..1
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CROSSREFS
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Sequence in context: A020268 A066322 A128922 * A224568 A224561 A116308
Adjacent sequences: A224557 A224558 A224559 * A224561 A224562 A224563
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin Apr 10 2013
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STATUS
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approved
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