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A254483 T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal sum minus antidiagonal minimum nondecreasing horizontally and vertically 9
512, 2696, 2696, 12260, 11293, 12260, 47140, 50454, 50454, 47140, 170504, 170900, 211579, 170900, 170504, 586508, 603895, 686988, 686988, 603895, 586508, 1964388, 1990286, 2289173, 2539310, 2289173, 1990286, 1964388, 6462708, 6557179, 7113819 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

......512......2696.....12260......47140.....170504.....586508.....1964388

.....2696.....11293.....50454.....170900.....603895....1990286.....6557179

....12260.....50454....211579.....686988....2289173....7113819....22624962

....47140....170900....686988....2539310....8704471...28312934....86663046

...170504....603895...2289173....8704471...24234594...71273789...191995191

...586508...1990286...7113819...28312934...71273789..205535751...540249256

..1964388...6557179..22624962...86663046..191995191..540249256..1553637600

..6462708..20990158..68677228..247709745..525287732.1390563554..4193549493

.21003228..66511881.207208428..682297737.1379347935.3531296333.11469180519

.67662328.206889218.608944631.1838103410.3717747517.9326702364.30648695723

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..287

FORMULA

Empirical for column k:

k=1: [linear recurrence of order 27] for n>32

k=2: [order 54] for n>62

EXAMPLE

Some solutions for n=2 k=4

..0..0..0..1..1..1....0..0..0..0..1..1....0..0..0..1..1..0....0..0..0..0..0..1

..0..0..1..0..0..0....1..0..1..0..1..0....0..0..1..1..0..0....0..0..0..1..1..1

..0..0..1..0..1..1....1..0..1..0..1..1....0..1..0..1..1..1....0..0..0..1..0..1

..0..1..1..0..1..1....0..0..1..1..1..1....0..1..0..1..0..0....1..0..0..1..1..1

CROSSREFS

Sequence in context: A224643 A186832 A254553 * A254476 A254804 A253820

Adjacent sequences:  A254480 A254481 A254482 * A254484 A254485 A254486

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Jan 31 2015

STATUS

approved

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Last modified September 30 07:52 EDT 2022. Contains 357104 sequences. (Running on oeis4.)