A197305 Number of n X 6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,4,0,2,1 for x=0,1,2,3,4.

8, 122, 1139, 15930, 207538, 2533633, 32070816, 406507906, 5121683931, 64661725576, 817020106978, 10316814032165, 130270307404176, 1645111173920002, 20774993393517759, 262348958240337732

Offset

1,1

Comments

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

Column 6 of A197307.

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
..2..0..0..0..1..0....0..2..0..0..0..0....0..1..0..0..2..0....0..2..0..0..1..0
..0..2..2..1..4..1....2..3..0..1..0..0....1..4..1..2..3..0....0..3..2..1..4..1
..2..3..0..0..1..0....0..2..1..4..1..2....0..1..0..0..2..2....0..2..0..2..1..0
..0..2..0..0..0..2....2..0..0..1..0..0....0..2..0..0..0..0....0..2..0..0..0..0

Crossrefs

Cf. A197307.

Sequence in context: A197456 A196341 A196320 * A196972 A197559 A222498

Adjacent sequences: A197302 A197303 A197304 * A197306 A197307 A197308

Keyword

nonn

Author

R. H. Hardin, Oct 13 2011

Status

approved