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A235787 Number of (4+1) X (n+1) 0..2 arrays with the difference of the upper and lower median value of each 2 X 2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise. 1
17837, 924323, 41559689, 1647458581, 60893670493, 2094824462739, 68611567225003, 2143539826346751, 64564856564377493, 1881089804262142705, 53326114376091385649, 1475596467988352153487, 40006226305036094218101 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 4 of A235784.
LINKS
EXAMPLE
Some solutions for n=1
..0..0....0..2....2..0....0..2....1..2....0..0....1..0....2..0....1..0....0..2
..1..2....1..2....2..0....2..0....2..0....2..1....2..2....0..1....0..1....2..0
..2..0....2..1....1..2....0..1....1..0....1..1....0..1....2..2....0..2....1..0
..1..0....2..0....2..0....1..1....0..2....0..1....2..2....2..0....1..2....2..2
..1..2....1..2....2..2....1..2....1..2....0..0....1..2....1..1....0..0....1..0
CROSSREFS
Cf. A235784.
Sequence in context: A054472 A204742 A235782 * A235563 A188103 A250078
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 15 2014
STATUS
approved

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Last modified March 29 01:36 EDT 2024. Contains 371264 sequences. (Running on oeis4.)