A197646 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,2,2,0,2 for x=0,1,2,3,4

1, 185, 9007, 251972, 7296769, 243912221, 8248011722, 265348341492, 8500602391949, 277030071745596, 9038063797683276, 293030900435918084, 9496009802624436871, 308447946938205252275, 10021951587844761774616

Offset

1,2

Comments

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

Column 6 of A197648

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

Crossrefs

Sequence in context: A207076 A189181 A203392 * A015273 A214605 A186398

Adjacent sequences: A197643 A197644 A197645 * A197647 A197648 A197649

Keyword

nonn

Author

R. H. Hardin Oct 16 2011

Status

approved