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A235528 Number of (n+1)X(2+1) 0..2 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing rowwise and columnwise 1
498, 6954, 102687, 1241251, 14564613, 152335168, 1529460228, 14358083795, 129965217502, 1127705340858, 9506797859825, 77906362834327, 624709679403369, 4911838758540025, 38010396000602450, 290107442005193524 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 2 of A235531
LINKS
EXAMPLE
Some solutions for n=3
..1..1..0....0..0..2....1..1..0....2..0..2....0..0..0....0..0..1....0..1..2
..2..1..2....1..2..0....0..1..2....0..0..2....0..1..1....0..1..0....0..2..1
..1..1..2....1..1..0....1..1..0....1..1..0....0..2..1....1..2..1....2..1..2
..1..1..2....2..0..2....2..1..1....2..0..0....1..1..2....2..0..0....0..2..0
CROSSREFS
Sequence in context: A067917 A093249 A235753 * A277785 A339622 A073928
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 11 2014
STATUS
approved

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Last modified March 28 11:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)