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A235729 Number of (n+1)X(n+1) 0..1 arrays with the sum of each 2X2 subblock maximum and minimum lexicographically nondecreasing columnwise and nonincreasing rowwise 0
16, 380, 29130, 7041734, 5507798734, 13917264768542, 113955406504401666, 3023114826732726577928, 259940094904908807764719054 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Diagonal of A235736
LINKS
EXAMPLE
Some solutions for n=3
..1..0..1..0....1..0..1..0....1..1..0..1....0..1..1..0....1..0..1..0
..1..0..0..1....1..0..0..1....0..1..0..1....1..1..0..0....0..1..1..0
..0..1..0..0....0..1..0..1....0..1..0..1....0..0..1..0....0..0..1..1
..1..0..0..1....0..1..0..1....1..0..0..0....1..1..0..0....0..1..1..0
CROSSREFS
Sequence in context: A333581 A201617 A235672 * A189766 A235442 A343213
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 15 2014
STATUS
approved

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Last modified March 28 12:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)