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A253332
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Number of (7+1)X(n+1) 0..1 arrays with every 2X2 subblock sum nondecreasing horizontally, vertically and antidiagonally ne-to-sw
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1
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3249, 9228, 25659, 74953, 210417, 600020, 1660088, 4590122, 12462900, 33364770, 88332846, 228094422, 584261303, 1450543774, 3577232487, 8532736844, 20234227845, 46437782630, 106028484423, 234761319957, 517489800375
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OFFSET
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1,1
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COMMENTS
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Row 7 of A253326
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..210
R. H. Hardin, Empirical recurrence of order 87
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FORMULA
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Empirical recurrence of order 87 (see link above)
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EXAMPLE
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Some solutions for n=4
..0..0..1..0..1....0..0..1..1..1....0..0..0..1..1....0..0..0..0..0
..1..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..1..0
..0..1..1..1..1....1..1..1..1..1....0..1..1..1..1....1..0..1..0..1
..1..0..0..0..0....0..0..0..0..0....1..0..0..0..0....1..0..1..0..1
..0..1..1..1..1....1..1..1..1..1....0..1..1..1..1....1..1..1..1..1
..1..1..0..1..0....0..1..0..1..0....0..1..0..1..0....0..1..0..1..0
..0..1..1..1..1....1..1..1..1..1....1..1..1..1..1....1..1..1..1..1
..1..1..0..1..0....1..1..1..1..1....0..1..1..1..1....0..1..0..1..0
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CROSSREFS
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Sequence in context: A247725 A265198 A269061 * A253325 A204038 A235412
Adjacent sequences: A253329 A253330 A253331 * A253333 A253334 A253335
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Dec 30 2014
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STATUS
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approved
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