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

498, 6954, 102687, 1241251, 14564613, 152335168, 1529460228, 14358083795, 129965217502, 1127705340858, 9506797859825, 77906362834327, 624709679403369, 4911838758540025, 38010396000602450, 290107442005193524

Offset

1,1

Comments

Column 2 of A235531

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

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

Adjacent sequences: A235525 A235526 A235527 * A235529 A235530 A235531

Keyword

nonn

Author

R. H. Hardin, Jan 11 2014

Status

approved