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A195962
T(n,k)=Number of nXk 0..4 arrays with each element equal to the number of its horizontal and vertical neighbors unequal to itself
8
1, 1, 1, 2, 1, 2, 1, 6, 6, 1, 1, 5, 10, 5, 1, 2, 5, 16, 16, 5, 2, 1, 14, 21, 19, 21, 14, 1, 1, 21, 44, 25, 25, 44, 21, 1, 2, 29, 82, 70, 33, 70, 82, 29, 2, 1, 54, 144, 105, 93, 93, 105, 144, 54, 1, 1, 93, 273, 155, 92, 214, 92, 155, 273, 93, 1, 2, 149, 531, 332, 229, 410, 410, 229, 332
OFFSET
1,4
COMMENTS
Table starts
.1..1...2...1...1....2.....1.....1......2......1.......1........2........1
.1..1...6...5...5...14....21....29.....54.....93.....149......254......437
.2..6..10..16..21...44....82...144....273....531....1032.....1960.....3805
.1..5..16..19..25...70...105...155....332....557....1043.....1904.....3391
.1..5..21..25..33...93....92...229....468....795....1482.....2849.....5272
.2.14..44..70..93..214...410...998...2123...4591...11034....26330....60901
.1.21..82.105..92..410...945..1919...4478..10274...27467....73240...184074
.1.29.144.155.229..998..1919..4847..15072..43789..117755...368812..1123271
.2.54.273.332.468.2123..4478.15072..52912.166310..565567..2117127..7532871
.1.93.531.557.795.4591.10274.43789.166310.661587.2492452.11580819.46651212
LINKS
EXAMPLE
Some solutions for n=7 k=5
..1..1..1..1..1....1..3..2..2..1....1..3..2..3..1....1..1..1..3..1
..2..3..3..4..3....1..4..3..3..1....1..4..2..2..1....3..4..1..1..1
..2..4..2..2..2....1..2..2..2..1....1..3..3..2..1....2..2..1..1..3
..3..2..2..4..3....1..2..3..2..1....1..2..2..2..1....3..2..1..1..2
..2..2..4..2..2....1..2..3..2..1....1..2..3..3..1....2..2..1..1..2
..3..4..2..2..3....1..2..4..2..1....1..2..2..4..1....3..4..1..1..1
..2..3..2..3..2....1..2..3..2..1....1..3..2..3..1....1..1..1..3..1
CROSSREFS
Sequence in context: A169593 A057568 A220587 * A046749 A016543 A300585
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Sep 25 2011
STATUS
approved