A220785 Agreement numbers: number of nX4 arrays of the count of horizontal and vertical neighbors equal to the corresponding element in a random 0..3 nX4 array.

8, 388, 21551, 1180735, 64833703, 3558125814, 195295491582

Offset

1,1

Comments

Column 4 of A220786

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Sequence in context: A159515 A369770 A220799 * A385408 A203368 A012825

Adjacent sequences: A220782 A220783 A220784 * A220786 A220787 A220788

Keyword

nonn

Author

R. H. Hardin, Dec 20 2012

Status

approved