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A236488 Number of (n+1)X(4+1) 0..2 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise 1
26091, 2339313, 192914141, 14826588345, 1095464601321, 78726807207771, 5564322438106237, 389132366606307561, 27040769321739907771, 1871865092363761947679, 129286147695689699622959 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A236490
LINKS
EXAMPLE
Some solutions for n=1
..1..1..2..0..0....0..1..0..0..1....0..0..1..1..2....1..2..0..0..2
..2..0..2..0..2....1..0..1..1..0....1..1..1..2..2....2..0..0..2..1
CROSSREFS
Sequence in context: A236080 A115494 A236493 * A235435 A250972 A235096
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 27 2014
STATUS
approved

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Last modified February 26 21:28 EST 2024. Contains 370352 sequences. (Running on oeis4.)