A197558 Number of nX5 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

5, 57, 410, 4055, 36877, 310658, 2817383, 25115833, 223137190, 1986928549, 17695730995, 157551002096, 1402893385536, 12491465131399, 111225018303022, 990363617390993, 8818318528316601, 78519303830481116, 699145265959550188

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 5 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..2..0....0..0..2..0..0....0..0..2..0..0....2..0..0..2..0
..2..3..2..4..2....2..2..4..2..0....0..2..4..2..2....0..0..2..4..2
..0..1..0..2..0....0..0..2..3..1....2..3..2..0..0....2..1..3..2..0
..0..0..0..2..0....2..0..0..2..0....0..1..0..0..0....0..0..2..0..0

Crossrefs

Sequence in context: A197304 A000362 A196971 * A218658 A266278 A103047

Adjacent sequences: A197555 A197556 A197557 * A197559 A197560 A197561

Keyword

nonn

Author

R. H. Hardin Oct 16 2011

Status

approved