A197500 Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,3,1,1,0 for x=0,1,2,3,4

1, 19, 162, 967, 7845, 58434, 462825, 3560859, 27478512, 213540131, 1655543599, 12828732416, 99455874997, 771029045491, 5977169558845, 46336520563805, 359215034469100, 2784731837712288, 21587977565996803, 167356072621226437

Offset

1,2

Comments

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

Column 5 of A197503

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

Crossrefs

Sequence in context: A302124 A217215 A159682 * A341398 A212850 A215115

Adjacent sequences: A197497 A197498 A197499 * A197501 A197502 A197503

Keyword

nonn

Author

R. H. Hardin Oct 15 2011

Status

approved