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A206974 T(n,k)=Number of nXk 0..3 arrays avoiding the pattern z-1 z-1 z in any row, column, nw-to-se diagonal or ne-to-sw antidiagonal 12
4, 16, 16, 61, 256, 61, 232, 3721, 3721, 232, 882, 53824, 180294, 53824, 882, 3353, 777924, 8685113, 8688551, 777924, 3353, 12747, 11242609, 419203246, 1391081032, 417476451, 11242609, 12747, 48460, 162486009, 20232472915, 223912418544 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
.....4.........16.............61..............232...............882
....16........256...........3721............53824............777924
....61.......3721.........180294..........8685113.........419203246
...232......53824........8688551.......1391081032......223912418544
...882.....777924......417476451.....221715091199...118749552817647
..3353...11242609....20061347530...35350565625684.63023113538493420
.12747..162486009...964232197214.5637076828393230
.48460.2348371600.46342878010975
LINKS
EXAMPLE
Some solutions for n=4 k=3
..2..0..3....2..0..1....3..1..1....2..1..2....1..1..0....1..0..0....1..3..3
..0..2..0....0..2..0....1..3..3....3..0..1....3..2..3....0..0..3....1..1..3
..3..1..1....1..2..1....3..1..3....2..0..0....3..0..0....2..2..1....0..1..0
..2..0..2....3..0..0....1..3..3....1..3..0....2..1..3....0..1..3....0..1..0
CROSSREFS
Column 1 and row 1 are A206570
Column 2 and row 2 are A206571
Sequence in context: A269201 A269289 A267933 * A206577 A207582 A207057
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Feb 14 2012
STATUS
approved

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Last modified March 29 04:59 EDT 2024. Contains 371264 sequences. (Running on oeis4.)