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A236493 Number of (4+1)X(n+1) 0..2 arrays with the difference between each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise 1
26091, 2330087, 192685833, 14826588345, 1098468030593, 79148954230787, 5608106012296057, 392998922033423091, 27352966322984607571, 1895677299526633150487, 131037228259070666307047 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 4 of A236490
LINKS
EXAMPLE
Some solutions for n=1
..2..1....0..2....0..2....1..0....1..2....0..2....2..1....2..1....2..1....0..2
..2..0....0..1....0..2....2..2....2..0....2..0....2..0....0..2....0..0....1..0
..2..1....1..2....0..2....0..2....1..2....2..2....2..1....1..0....0..1....2..1
..0..0....0..0....0..2....2..1....1..1....1..1....2..0....2..0....1..1....1..1
..2..2....1..0....2..2....2..0....1..2....0..1....0..1....0..0....0..0....1..0
CROSSREFS
Sequence in context: A235740 A236080 A115494 * A236488 A235435 A250972
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 27 2014
STATUS
approved

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Last modified February 23 09:02 EST 2024. Contains 370276 sequences. (Running on oeis4.)