A197559 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,0,2,2 for x=0,1,2,3,4

8, 122, 1479, 23710, 310658, 4706533, 64257852, 901951086, 12684564675, 178322495650, 2506556414671, 35223505169401, 495117362856222, 6957878417748008, 97787038707298921, 1374307359034315960

Offset

1,1

Comments

Every 0 is next to 0 4's, every 1 is next to 1 3's, every 2 is next to 2 0's, every 3 is next to 3 2's, every 4 is next to 4 2's

Column 6 of A197561

Links

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

Example

Some solutions containing all values 0 to 4 for n=4
..0..2..0..0..2..0....0..0..2..0..0..2....0..2..0..0..2..0....0..2..0..0..2..0
..2..3..0..2..4..2....0..2..3..1..0..0....2..4..2..0..3..2....0..3..2..0..1..0
..0..2..1..3..2..0....2..4..2..0..2..2....0..2..3..1..2..0....0..2..4..2..3..2
..0..0..0..2..0..2....0..2..0..0..2..0....2..0..2..0..0..0....2..0..2..0..2..0

Crossrefs

Sequence in context: A196320 A197305 A196972 * A222498 A361308 A359355

Adjacent sequences: A197556 A197557 A197558 * A197560 A197561 A197562

Keyword

nonn

Author

R. H. Hardin Oct 16 2011

Status

approved