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A255042
Number of (7+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally
1
1640073, 794663, 425667, 310872, 427492, 546968, 813888, 1126442, 1716252, 2122356, 3224968, 4466816, 6952968, 8780004, 13664412, 18427768, 28625632, 35876032, 54851644, 73948452, 113063376, 142277720, 217554104, 293137028
OFFSET
1,1
COMMENTS
Row 7 of A255036
LINKS
FORMULA
Empirical: a(n) = 2*a(n-1) -2*a(n-3) +7*a(n-4) -11*a(n-5) -2*a(n-6) +12*a(n-7) -12*a(n-8) +9*a(n-9) +12*a(n-10) -16*a(n-11) -4*a(n-12) +14*a(n-13) -16*a(n-14) +16*a(n-16) -8*a(n-17) for n>36
EXAMPLE
Some solutions for n=1
..0..0..0....0..0..0....1..0..0....0..0..0....0..0..0....0..0..0....1..0..0
..0..0..0....1..0..0....0..0..0....1..0..0....1..0..0....0..0..1....1..0..0
..0..0..0....0..0..1....0..0..0....0..1..0....0..1..1....0..1..0....0..0..0
..1..0..1....0..1..0....0..0..0....0..0..0....0..0..1....0..0..1....1..1..0
..1..0..0....0..0..0....0..0..0....0..1..0....1..1..0....0..1..0....1..0..0
..0..1..0....0..1..0....0..0..0....1..0..0....0..1..1....0..1..0....1..1..0
..1..0..0....0..0..0....0..1..1....1..0..1....0..1..1....1..1..0....0..1..1
..1..0..1....1..1..1....0..1..1....1..0..0....1..1..0....0..1..1....1..0..1
..1..1..0....0..1..0....0..0..0....0..1..1....0..1..0....1..1..0....0..1..0
CROSSREFS
Sequence in context: A015334 A015377 A296450 * A255035 A256953 A205985
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 13 2015
STATUS
approved