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A222828 T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order 4
1, 1, 1, 2, 8, 2, 11, 80, 80, 11, 34, 1154, 2695, 1154, 34, 131, 14388, 163059, 163059, 14388, 131, 438, 200082, 4990235, 23664739, 4990235, 200082, 438, 2150, 2652496, 324288311, 3489313607, 3489313607, 324288311, 2652496, 2150, 7676, 36622104 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,4

COMMENTS

Table starts

.....1.........1............2.............11..............34.............131

.....1.........8...........80...........1154...........14388..........200082

.....2........80.........2695.........163059.........4990235.......324288311

....11......1154.......163059.......23664739......3489313607....520160675223

....34.....14388......4990235.....3489313607...1138373246058.835207158093802

...131....200082....324288311...520160675223.835207158093802

...438...2652496..10170499564.78214529020708

..2150..36622104.674288738013

..7676.498427856

.32491

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..60

EXAMPLE

Some solutions for n=3 k=4

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

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

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

CROSSREFS

Column 1 is A222650

Sequence in context: A010466 A086396 A195844 * A222842 A098471 A074723

Adjacent sequences:  A222825 A222826 A222827 * A222829 A222830 A222831

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Mar 06 2013

STATUS

approved

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Last modified November 18 17:45 EST 2019. Contains 329287 sequences. (Running on oeis4.)