A235817 Number of (n+1)X(3+1) 0..3 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise

28978, 2287822, 153490516, 9225012664, 513135357020, 26782783497172, 1328140965773780, 62962853445208032, 2872298287397796214, 126592143543508692580, 5412570935502495274518, 225163920450438652782792

Offset

1,1

Comments

Column 3 of A235818

Links

R. H. Hardin, Table of n, a(n) for n = 1..63

Example

Some solutions for n=1
..1..0..1..1....1..3..3..2....2..3..2..2....1..3..1..0....3..3..3..3
..0..0..0..0....0..1..3..0....2..2..0..1....1..0..1..1....1..1..1..1

Crossrefs

Sequence in context: A031636 A364720 A235820 * A235576 A206017 A250762

Adjacent sequences: A235814 A235815 A235816 * A235818 A235819 A235820

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved