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A202916 T(n,k)=Number of nXk 0..7 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor 9
1, 8, 8, 64, 680, 64, 372, 31984, 31984, 372, 1856, 1194376, 9509536, 1194376, 1856, 9052, 44344428, 2397172032, 2397172032, 44344428, 9052, 45648, 1707628408, 622483753816, 4062408076312, 622483753816, 1707628408, 45648, 235538 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Table starts

......1.............8...................64........................372

......8...........680................31984....................1194376

.....64.........31984..............9509536.................2397172032

....372.......1194376...........2397172032..............4062408076312

...1856......44344428.........622483753816...........7102116597811456

...9052....1707628408......165216756703876.......12637286590945269232

..45648...66085464308....43681585962838352....22397115742156661223732

.235538.2542636404496.11516921180669227688.39623544474309263600520384

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..84

EXAMPLE

Some solutions for n=4 k=3

..4..7..7....0..7..2....7..1..1....0..2..1....0..7..6....7..1..6....5..3..2

..4..4..7....2..7..7....7..7..2....2..2..2....2..7..4....7..5..6....5..0..6

..7..3..2....6..2..3....3..4..1....3..5..3....1..0..5....2..4..7....6..1..6

..7..0..1....6..6..0....5..5..1....3..5..3....0..4..5....3..3..7....6..5..1

CROSSREFS

Sequence in context: A245133 A183819 A215271 * A165426 A183395 A019216

Adjacent sequences:  A202913 A202914 A202915 * A202917 A202918 A202919

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Dec 26 2011

STATUS

approved

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Last modified July 21 05:26 EDT 2019. Contains 325190 sequences. (Running on oeis4.)