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A220461 T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, vertical and antidiagonal neighbors in a random 0..1 nXk array 6
1, 2, 2, 4, 4, 4, 8, 22, 22, 8, 16, 74, 108, 74, 16, 32, 250, 691, 691, 250, 32, 64, 848, 3872, 6255, 3872, 848, 64, 128, 2851, 20897, 58217, 58217, 20897, 2851, 128, 256, 9535, 112582, 530196, 864047, 530196, 112582, 9535, 256, 512, 31888, 605780, 4787009 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Table starts

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

....2......4.......22........74........250........848.......2851.......9535

....4.....22......108.......691.......3872......20897.....112582.....605780

....8.....74......691......6255......58217.....530196....4787009...42979644

...16....250.....3872.....58217.....864047...12754438..185951681.2697113973

...32....848....20897....530196...12754438..303102319.7147490007

...64...2851...112582...4787009..185951681.7147490007

..128...9535...605780..42979644.2697113973

..256..31888..3249132.385002942

..512.106775.17400206

.1024.357028

.2048

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..83

EXAMPLE

Some solutions for n=3 k=4

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

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

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

CROSSREFS

Column 1 is A000079(n-1)

Sequence in context: A317153 A316883 A317611 * A220287 A320195 A129163

Adjacent sequences:  A220458 A220459 A220460 * A220462 A220463 A220464

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Dec 15 2012

STATUS

approved

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Last modified October 25 17:22 EDT 2021. Contains 348255 sequences. (Running on oeis4.)