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A220545 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 vertical neighbors in a random 0..2 nXk array 4
1, 2, 2, 4, 8, 4, 8, 38, 38, 8, 16, 176, 395, 176, 16, 32, 816, 3778, 3778, 816, 32, 64, 3616, 32126, 64968, 32126, 3616, 64, 128, 15362, 261042, 1047584, 1047584, 261042, 15362, 128, 256, 63484, 2095121, 16776012, 33552929, 16776012, 2095121, 63484, 256, 512 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Table starts

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

...2......8.......38.......176........816.......3616.....15362......63484

...4.....38......395......3778......32126.....261042...2095121...16773300

...8....176.....3778.....64968....1047584...16776012.268433898.4294965416

..16....816....32126...1047584...33552929.1073740632

..32...3616...261042..16776012.1073740632

..64..15362..2095121.268433898

.128..63484.16773300

.256.258180

.512

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..59

EXAMPLE

Some solutions for n=3 k=4

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

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

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

CROSSREFS

Column 1 is A000079(n-1)

Sequence in context: A116694 A220810 A221024 * A220751 A220967 A221590

Adjacent sequences:  A220542 A220543 A220544 * A220546 A220547 A220548

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Dec 15 2012

STATUS

approved

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Last modified January 25 19:09 EST 2020. Contains 331249 sequences. (Running on oeis4.)