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A186625 T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with 3X3 subblock sums nondecreasing rightwards and downwards. 4
19683, 317115, 317115, 5109075, 9957573, 5109075, 82312875, 313250283, 313250283, 82312875, 1033357725, 9626194591, 19192412328, 9626194591, 1033357725, 12972796635, 205142945972, 1114156913743, 1114156913743 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

........19683........317115........5109075........82312875.....1033357725

.......317115.......9957573......313250283......9626194591...205142945972

......5109075.....313250283....19192412328...1114156913743.40638068592052

.....82312875....9626194591..1114156913743.117244058006472

...1033357725..205142945972.40638068592052

..12972796635.4375747771546

.162860787181

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..31

EXAMPLE

Some solutions for 5X4

..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0

..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0

..0..0..1..1....1..0..1..2....0..0..0..2....0..0..0..2....1..0..2..2

..1..0..1..2....1..0..1..1....2..1..0..0....1..0..2..2....1..0..0..1

..0..1..2..1....2..1..2..1....1..2..0..1....2..2..2..2....1..0..1..0

CROSSREFS

Sequence in context: A250508 A250507 A250505 * A186622 A250459 A250455

Adjacent sequences:  A186622 A186623 A186624 * A186626 A186627 A186628

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 24 2011

STATUS

approved

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Last modified December 4 22:42 EST 2021. Contains 349526 sequences. (Running on oeis4.)