A235827 Number of (4+1)X(n+1) 0..3 arrays with the difference of the upper median and minimum value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise

283672, 64246449, 14397784435, 2855211911294, 542901316539098, 96051333465994238, 16165139737161961508, 2577711638669617077529, 392567951486901178402915, 57214683823639893924494635

Offset

1,1

Comments

Row 4 of A235824

Links

Table of n, a(n) for n=1..10.

Example

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

Crossrefs

Sequence in context: A245659 A321055 A185886 * A204866 A236504 A214357

Adjacent sequences: A235824 A235825 A235826 * A235828 A235829 A235830

Keyword

nonn

Author

R. H. Hardin, Jan 16 2014

Status

approved