A235754 Number of (n+1)X(3+1) 0..2 arrays with the sum of each 2X2 subblock two median terms lexicographically nondecreasing columnwise and nonincreasing rowwise

2996, 88732, 2721271, 68186440, 1669079300, 36221011849, 753688651636, 14525190680041, 268128519251558, 4694013468185380, 79134915757328335, 1283261845996157070, 20172199821307986019, 307868273991969443393

Offset

1,1

Comments

Column 3 of A235756

Links

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

Example

Some solutions for n=2
..1..2..2..2....0..1..1..2....2..1..2..0....2..2..2..1....0..0..1..2
..0..1..2..1....2..1..0..1....0..2..2..2....1..2..2..2....0..0..2..0
..1..1..2..0....0..1..2..1....1..0..2..2....2..0..2..0....2..0..1..1

Crossrefs

Sequence in context: A158963 A178326 A063055 * A235529 A106766 A119892

Adjacent sequences: A235751 A235752 A235753 * A235755 A235756 A235757

Keyword

nonn

Author

R. H. Hardin, Jan 15 2014

Status

approved