A197611 Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,2,1,1,1 for x=0,1,2,3,4

6, 352, 9361, 305072, 9128940, 273369257, 8272253014, 248406422932, 7492663676120, 225895450875974, 6806715214396789, 205133014114836249, 6182227794667672415, 186308619483759925812, 5614733760573864189597

Offset

1,1

Comments

Every 0 is next to 0 4'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 A197613

Links

R. H. Hardin, Table of n, a(n) for n = 1..136

Example

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

Crossrefs

Sequence in context: A059415 A246112 A197780 * A233463 A290782 A367519

Adjacent sequences: A197608 A197609 A197610 * A197612 A197613 A197614

Keyword

nonn

Author

R. H. Hardin Oct 16 2011

Status

approved