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A220916 T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..2 nXk array 6
1, 2, 1, 4, 8, 1, 8, 37, 38, 1, 16, 165, 379, 176, 1, 32, 749, 3687, 3299, 816, 1, 64, 3279, 30963, 61597, 27365, 3616, 1, 128, 13865, 253013, 1017676, 1004213, 220299, 15362, 1, 256, 57374, 2042071, 16524320, 32829580, 16172914, 1754781, 63484, 1, 512 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Table starts

.1.....2.......4........8.......16.......32........64......128....256.512

.1.....8......37......165......749.....3279.....13865....57374.233955

.1....38.....379.....3687....30963...253013...2042071.16390010

.1...176....3299....61597..1017676.16524320.265639495

.1...816...27365..1004213.32829580

.1..3616..220299.16172914

.1.15362.1754781

.1.63484

.1

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..49

EXAMPLE

Some solutions for n=3 k=4

..0..0..0..1....1..0..1..1....0..0..0..0....1..1..0..1....1..0..0..0

..0..0..1..1....0..0..1..0....1..1..0..0....0..0..1..1....1..1..1..1

..0..0..0..0....0..0..1..1....0..1..0..0....1..1..0..0....0..0..1..0

CROSSREFS

Column 2 is A220542

Row 1 is A000079(n-1)

Sequence in context: A128412 A221660 A221062 * A221632 A071951 A264059

Adjacent sequences:  A220913 A220914 A220915 * A220917 A220918 A220919

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Dec 24 2012

STATUS

approved

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Last modified May 19 05:04 EDT 2022. Contains 353826 sequences. (Running on oeis4.)