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A254770
Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the two maximums of the central row and the central column and the two medians of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally
1
11677, 50173, 295516, 1901784, 11736086, 72739438, 462927268, 2925883667, 18462927533, 116757027289, 738370654171, 4667167731292, 29509145886141, 186576342001502, 1179604295993078, 7457967831756923, 47153169509714961
OFFSET
1,1
COMMENTS
Column 3 of A254775
LINKS
FORMULA
Empirical: a(n) = 7*a(n-1) +a(n-2) -36*a(n-3) +104*a(n-4) -577*a(n-5) +406*a(n-6) -2654*a(n-7) -1083*a(n-8) +54521*a(n-9) -21741*a(n-10) -154770*a(n-11) +38931*a(n-12) -13306*a(n-13) -72151*a(n-14) +367153*a(n-15) +1186616*a(n-16) +175841*a(n-17) -2541563*a(n-18) -2203312*a(n-19) -1102181*a(n-20) +5457515*a(n-21) +3952319*a(n-22) -2371833*a(n-23) +70124*a(n-24) -8362041*a(n-25) +760917*a(n-26) +7641448*a(n-27) -182502*a(n-28) -1743336*a(n-29) -1390764*a(n-30) -1542892*a(n-31) -296088*a(n-32) +4265808*a(n-33) -720384*a(n-34) -1733104*a(n-35) +286080*a(n-36) +165568*a(n-37) +32960*a(n-38) for n>51
EXAMPLE
Some solutions for n=2
..0..1..1..1..0....0..1..0..0..1....0..0..1..1..1....0..1..0..0..1
..0..1..1..1..0....0..1..1..0..1....1..0..0..0..0....1..0..1..0..1
..1..1..1..1..1....0..0..1..1..0....0..0..0..1..0....1..0..1..1..0
..1..0..1..0..0....1..1..1..1..0....0..1..0..0..1....1..1..1..1..1
CROSSREFS
Sequence in context: A223598 A223439 A223691 * A254777 A254723 A354212
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 07 2015
STATUS
approved