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A268023
Number of nX4 0..2 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.
1
78, 6084, 295962, 13530274, 528293442, 19177213020, 642612340592, 20358126145678, 612589053437088, 17674943525434667, 491314996740768425, 13223822255444331592, 345845237074776797318, 8816893125592668315273
OFFSET
1,1
COMMENTS
Column 4 of A268026.
LINKS
EXAMPLE
Some solutions for n=2
..2..1..0..0....1..0..2..2....2..0..0..1....2..0..1..1....0..0..2..2
..1..0..2..0....2..1..1..1....2..1..0..2....0..0..2..1....1..2..0..1
CROSSREFS
Cf. A268026.
Sequence in context: A276177 A093278 A328354 * A268016 A077694 A119216
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 24 2016
STATUS
approved