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A220579 T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..1 nXk array 13
1, 2, 1, 4, 8, 1, 8, 21, 32, 1, 16, 115, 91, 128, 1, 32, 371, 1441, 375, 512, 1, 64, 1504, 8334, 17505, 1487, 2048, 1, 128, 5240, 64497, 165130, 205323, 5835, 8192, 1, 256, 19904, 436288, 2652007, 3162375, 2352642, 22775, 32768, 1, 512, 71787, 3036588 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Table starts
.1.......2.......4..........8..........16...........32...........64.........128
.1.......8......21........115.........371.........1504.........5240.......19904
.1......32......91.......1441........8334........64497.......436288.....3036588
.1.....128.....375......17505......165130......2652007.....33180533...450926562
.1.....512....1487.....205323.....3162375....106841503...2449921734.65126683335
.1....2048....5835....2352642....59690533...4239598056.178051989526
.1....8192...22775...26616961..1120269376.166807007000
.1...32768...88683..299065708.20961430054
.1..131072..344975.3347252663
.1..524288.1341395
.1.2097152
.1
LINKS
EXAMPLE
Some solutions for n=3 k=4
..1..1..0..0....0..1..1..1....0..0..0..1....0..0..1..1....1..0..0..1
..0..1..1..1....1..0..0..1....0..0..0..1....1..0..1..0....0..0..0..1
..1..1..0..1....1..0..0..1....1..0..1..1....0..1..0..0....1..1..1..1
CROSSREFS
Column 2 is A004171(n-1)
Row 1 is A000079(n-1)
Sequence in context: A011234 A208917 A161381 * A330787 A128412 A221660
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Dec 16 2012
STATUS
approved

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Last modified May 22 19:06 EDT 2024. Contains 372758 sequences. (Running on oeis4.)