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A253509
Number of (n+2)X(7+2) 0..1 arrays with every 2X2 and 3X3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally and vertically
1
1500, 3088, 5692, 10236, 16592, 25988, 38564, 55576, 77680, 106248, 142556, 188308, 245396, 316036, 402740, 508348, 636044, 789376, 972276, 1189080, 1444548, 1743884, 2092756, 2497316, 2964220, 3500648, 4114324, 4813536, 5607156, 6504660
OFFSET
1,1
COMMENTS
Column 7 of A253510
LINKS
FORMULA
Empirical: a(n) = (1/6)*n^5 + (11/6)*n^4 + (97/6)*n^3 + (3661/6)*n^2 - (1501/3)*n - 980 for n>12
EXAMPLE
Some solutions for n=4
..1..1..1..1..1..1..1..1..0....0..1..1..1..1..1..1..1..1
..1..1..1..1..1..1..1..1..0....1..1..1..1..1..1..1..1..0
..1..1..1..1..1..1..0..0..0....1..1..1..1..1..1..1..1..0
..1..1..1..1..1..1..1..1..1....1..1..1..1..1..1..1..0..0
..1..1..1..1..0..0..0..0..0....1..1..1..1..1..0..1..0..1
..1..1..1..0..0..1..1..1..1....0..0..0..0..0..0..1..0..1
CROSSREFS
Sequence in context: A236732 A184078 A098191 * A237136 A183786 A181599
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 02 2015
STATUS
approved