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A199230
T(n,k) = Number of n X k 0..2 arrays with values 0..2 introduced in row major order, the number of instances of each value within one of each other, and every element equal to zero or one horizontal or vertical neighbors.
9
1, 1, 1, 1, 6, 1, 6, 15, 15, 6, 15, 148, 110, 148, 15, 15, 739, 1114, 1114, 739, 15, 90, 1538, 10790, 55956, 10790, 1538, 90, 226, 19458, 108608, 1167274, 1167274, 108608, 19458, 226, 219, 99290, 1114424, 9196334, 49412210, 9196334, 1114424, 99290, 219, 1436
OFFSET
1,5
COMMENTS
Table starts
....1.......1..........1...........6............15............15............90
....1.......6.........15.........148...........739..........1538.........19458
....1......15........110........1114.........10790........108608.......1114424
....6.....148.......1114.......55956.......1167274.......9196334.....530601540
...15.....739......10790.....1167274......49412210.....792389959...96560931821
...15....1538.....108608.....9196334.....792389959...70698654245.6443389324257
...90...19458....1114424...530601540...96560931821.6443389324257
..226...99290...11614563.11633434848.4344228334421
..219..199245..122555420.92326218546
.1436.2737170.1306096140
LINKS
EXAMPLE
Some solutions for n=6, k=4
..0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0....0..1..0..0
..1..2..1..2....2..0..1..2....2..0..1..1....2..0..1..1....1..0..1..2
..1..2..0..1....1..2..0..1....2..1..0..2....1..2..0..2....2..1..0..2
..2..1..0..1....1..2..1..2....0..2..0..2....2..1..2..1....1..2..1..0
..2..0..1..2....0..0..2..1....2..1..2..1....2..0..2..0....1..2..0..2
..0..2..0..2....2..1..2..0....1..2..1..0....0..2..1..1....2..0..2..1
CROSSREFS
Sequence in context: A157292 A159828 A131114 * A199101 A366868 A127778
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Nov 04 2011
STATUS
approved