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A206797 T(n,k)=Number of nXk 0..3 arrays avoiding the pattern z z+1 z in any row, column, diagonal or antidiagonal 9
4, 16, 16, 61, 256, 61, 232, 3721, 3721, 232, 883, 53824, 180446, 53824, 883, 3361, 779689, 8683735, 8683735, 779689, 3361, 12793, 11296321, 420657877, 1382766472, 420657877, 11296321, 12793, 48694, 163660849, 20388622016, 222851712982 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.....4.........16.............61................232..................883

....16........256...........3721..............53824...............779689

....61.......3721.........180446............8683735............420657877

...232......53824........8683735.........1382766472.........222851712982

...883.....779689......420657877.......222851712982......120305843593958

..3361...11296321....20388622016.....35954795295641....65062863493632615

.12793..163660849...988006480837...5798927126392378.35167047469699730422

.48694.2371105636.47875604265753.935195769843015103

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..71

EXAMPLE

Some solutions for n=4 k=3

..3..3..2....2..1..2....0..1..1....1..0..2....3..2..2....0..1..1....1..3..2

..0..0..2....3..0..1....3..2..2....3..2..1....0..2..3....3..3..0....2..0..2

..1..1..3....3..0..0....2..2..2....1..0..3....3..0..1....3..1..1....2..1..1

..1..1..1....1..3..0....1..3..2....3..0..1....2..3..3....3..2..1....0..1..1

CROSSREFS

Sequence in context: A206577 A207582 A207057 * A206967 A209092 A207134

Adjacent sequences:  A206794 A206795 A206796 * A206798 A206799 A206800

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Feb 12 2012

STATUS

approved

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Last modified October 28 19:51 EDT 2020. Contains 338064 sequences. (Running on oeis4.)