A235830 Number of (n+1)X(3+1) 0..2 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise

3459, 112146, 3294824, 87276535, 2183863895, 51823058334, 1185755777410, 26334832022372, 572263357672413, 12229158329776181, 258153994196342883, 5400693894523672170, 112258618931005108819, 2322750011465102542819

Offset

1,1

Comments

Column 3 of A235833

Links

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

Example

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

Crossrefs

Sequence in context: A082242 A321866 A235835 * A235586 A252967 A252959

Adjacent sequences: A235827 A235828 A235829 * A235831 A235832 A235833

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved