A197780 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,2,1,1,1 for x=0,1,2,3,4

6, 352, 8085, 221082, 5833286, 153517349, 4052348046, 106662154198, 2816548576990, 74313847621002, 1959765215718653, 51696230890146989, 1363689536950015987, 35970623755533169978, 948840295066984918805

Offset

1,1

Comments

Every 0 is next to 0 3's, every 1 is next to 1 2'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 6 of A197782

Links

R. H. Hardin, Table of n, a(n) for n = 1..169

Example

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

Crossrefs

Sequence in context: A214445 A059415 A246112 * A197611 A233463 A290782

Adjacent sequences: A197777 A197778 A197779 * A197781 A197782 A197783

Keyword

nonn

Author

R. H. Hardin Oct 18 2011

Status

approved