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A204301 T(n,k)=Number of nXk 0..3 arrays with every element neighboring horizontally or vertically both a 0 and a 1, and 2 introduced before 3 in row major order 8
0, 0, 0, 0, 4, 0, 0, 4, 4, 0, 0, 16, 80, 16, 0, 0, 68, 160, 160, 68, 0, 0, 212, 2816, 5956, 2816, 212, 0, 0, 776, 19540, 56104, 56104, 19540, 776, 0, 0, 3076, 164112, 1972288, 6709692, 1972288, 164112, 3076, 0, 0, 11540, 1490212, 38262132, 277234340, 277234340 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

Table starts

.0....0.......0.........0............0...............0..................0

.0....4.......4........16...........68.............212................776

.0....4......80.......160.........2816...........19540.............164112

.0...16.....160......5956........56104.........1972288...........38262132

.0...68....2816.....56104......6709692.......277234340........17549848472

.0..212...19540...1972288....277234340.....47309058644......5589659640640

.0..776..164112..38262132..17549848472...5589659640640...2168622256129656

.0.3076.1490212.826746944.989144587700.870640738340900.749141388620048272

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..127

EXAMPLE

Some solutions for n=5 k=3

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

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

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

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

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

CROSSREFS

Sequence in context: A245198 A203285 A203542 * A204084 A096904 A308257

Adjacent sequences:  A204298 A204299 A204300 * A204302 A204303 A204304

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 14 2012

STATUS

approved

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Last modified September 27 07:54 EDT 2022. Contains 357052 sequences. (Running on oeis4.)