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A235781 Number of (n+1)X(3+1) 0..2 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise 1
3199, 86691, 1998795, 41559689, 807571787, 14878043073, 263391351981, 4508888392477, 75130028343785, 1222874406744241, 19515692813220075, 306085217228732839, 4728915176920700761, 72089433981418124645 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 3 of A235784
LINKS
EXAMPLE
Some solutions for n=2
..0..2..1..2....0..1..1..0....1..1..0..0....2..1..0..2....0..1..1..2
..1..0..0..0....1..2..1..0....0..0..2..2....1..1..1..1....2..2..2..1
..0..0..0..1....1..0..1..0....2..1..2..2....2..1..2..1....0..2..1..1
CROSSREFS
Sequence in context: A306197 A211840 A235786 * A235562 A269114 A035896
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 15 2014
STATUS
approved

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Last modified April 23 14:30 EDT 2024. Contains 371914 sequences. (Running on oeis4.)