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A255762
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Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the medians of the diagonal and antidiagonal minus the two sums of the central row and column nondecreasing horizontally, vertically and ne-to-sw antidiagonally
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1
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794128, 290525, 145536, 306248, 300504, 733081, 739776, 1603012, 1998480, 4087836, 5951488, 11586092, 18011344, 33446520, 52638248, 91911020, 141968656, 236249776, 355847440, 566125804, 828298440, 1272368584, 1814128584
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OFFSET
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1,1
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COMMENTS
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Row 7 of A255756
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LINKS
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R. H. Hardin, Table of n, a(n) for n = 1..210
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FORMULA
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Empirical: a(n) = 10*a(n-1) -45*a(n-2) +120*a(n-3) -202*a(n-4) +172*a(n-5) +150*a(n-6) -840*a(n-7) +1619*a(n-8) -1846*a(n-9) +959*a(n-10) +960*a(n-11) -3000*a(n-12) +3952*a(n-13) -3352*a(n-14) +1920*a(n-15) -720*a(n-16) +160*a(n-17) -16*a(n-18) for n>53
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EXAMPLE
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Some solutions for n=1
..0..1..0....0..1..0....0..1..0....0..0..0....0..1..0....0..0..0....0..0..0
..0..0..1....1..0..0....1..0..0....1..0..1....1..0..1....1..0..0....1..0..1
..1..1..0....0..0..1....0..1..1....1..1..1....1..1..1....1..1..0....1..1..1
..1..0..0....1..1..0....0..1..0....1..1..0....0..1..1....1..1..0....0..1..1
..0..1..1....0..0..0....0..1..0....0..1..1....0..1..1....1..0..0....0..1..1
..1..0..0....1..1..0....1..1..0....0..0..0....1..0..0....0..1..1....0..1..1
..1..0..0....1..0..0....0..0..1....0..1..1....1..0..0....1..1..0....0..0..0
..0..0..0....0..0..0....1..0..0....1..0..0....1..0..0....0..0..1....0..0..1
..1..1..1....1..1..0....1..0..1....1..0..0....0..0..0....1..1..1....0..0..1
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CROSSREFS
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Cf. A255756
Sequence in context: A237895 A187295 A234244 * A255755 A254844 A259304
Adjacent sequences: A255759 A255760 A255761 * A255763 A255764 A255765
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KEYWORD
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nonn
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AUTHOR
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R. H. Hardin, Mar 05 2015
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STATUS
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approved
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