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A250595 Number of (n+2)X(2+2) 0..2 arrays with nondecreasing sum of every three consecutive values in every row and column 1
157464, 2099520, 27993600, 373248000, 2592000000, 18000000000, 125000000000, 590625000000, 2790703125000, 13186072265625, 48243443062500, 176506677018000, 645779095649856, 1968088672456704, 5997984525582336 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A250601

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..80

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A258073 A245681 A278862 * A253311 A253659 A253729

Adjacent sequences:  A250592 A250593 A250594 * A250596 A250597 A250598

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 25 2014

STATUS

approved

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Last modified July 26 10:35 EDT 2021. Contains 346294 sequences. (Running on oeis4.)