A198012 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,3,0,1,2 for x=0,1,2,3,4

13, 465, 12503, 299335, 8244976, 207269787, 5423217685, 142032661893, 3690857815709, 96301082564026, 2508976201002271, 65375113684342891, 1703916722542461931, 44396185599805127387, 1156931762972934829184

Offset

1,1

Comments

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

Column 7 of A198013

Links

R. H. Hardin, Table of n, a(n) for n = 1..106

Example

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

Crossrefs

Sequence in context: A166184 A272656 A081862 * A197895 A197749 A198154

Adjacent sequences: A198009 A198010 A198011 * A198013 A198014 A198015

Keyword

nonn

Author

R. H. Hardin Oct 20 2011

Status

approved