A196801 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,2,0,4,1 for x=0,1,2,3,4

13, 2057, 140348, 8882811, 567312297, 36350586798, 2336509457978, 149921556582391, 9626071838140254, 617911286516585441, 39661708458260298030, 2546127117580511443456, 163441791893758118667088

Offset

1,1

Comments

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

Column 7 of A196802

Links

R. H. Hardin, Table of n, a(n) for n = 1..116

Example

Some solutions for n=4
..0..0..0..0..0..0..2....0..0..0..1..0..0..0....0..0..0..2..0..0..1
..0..0..0..0..0..0..0....0..0..0..2..2..1..0....0..0..0..2..0..0..2
..0..0..0..2..2..1..0....0..0..1..0..0..1..0....0..0..0..1..0..0..0
..1..2..0..2..0..0..0....0..0..2..0..0..2..0....0..0..0..1..2..0..0

Crossrefs

Sequence in context: A263221 A177914 A128394 * A196589 A197046 A283633

Adjacent sequences: A196798 A196799 A196800 * A196802 A196803 A196804

Keyword

nonn

Author

R. H. Hardin Oct 06 2011

Status

approved