A197363 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,1,1,1 for x=0,1,2,3,4

1, 249, 10317, 300943, 13639968, 564930689, 22225081365, 916121380455, 37586117262267, 1524500056348640, 62133636167189064, 2537563935267330621, 103445371582832062080, 4215904817820876539413, 171923620467459691011031

Offset

1,2

Comments

Every 0 is next to 0 4'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 1's

Column 7 of A197364

Links

R. H. Hardin, Table of n, a(n) for n = 1..71

Example

Some solutions containing all values 0 to 4 for n=4
..2..1..0..2..1..3..1....0..0..1..3..1..0..0....1..3..1..0..0..0..1
..1..3..0..1..4..1..2....2..1..1..1..4..1..2....2..1..2..0..0..1..3
..0..1..1..3..1..1..2....1..3..3..1..1..3..1....0..1..2..2..1..4..1
..0..0..0..0..1..3..1....2..1..1..2..0..0..0....1..3..1..1..3..1..2

Crossrefs

Sequence in context: A197400 A371491 A225209 * A069154 A045169 A267856

Adjacent sequences: A197360 A197361 A197362 * A197364 A197365 A197366

Keyword

nonn

Author

R. H. Hardin Oct 14 2011

Status

approved