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A223473
T(n,k)=Number of nXk 0..2 arrays with no more than floor(nXk/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..2 order
6
1, 1, 1, 2, 6, 2, 10, 18, 18, 10, 24, 58, 49, 58, 24, 72, 140, 522, 522, 140, 72, 168, 352, 883, 1341, 883, 352, 168, 664, 776, 12859, 6708, 6708, 12859, 776, 664, 1632, 1752, 20377, 15374, 13849, 15374, 20377, 1752, 1632, 5376, 3696, 327082, 61477, 230069
OFFSET
1,4
COMMENTS
Table starts
.....1.....1.......2.....10......24......72.....168.....664.....1632....5376
.....1.....6......18.....58.....140.....352.....776....1752.....3696....7904
.....2....18......49....522.....883...12859...20377..327082...517062.8613707
....10....58.....522...1341....6708...15374...61477..142610...503050.1229381
....24...140.....883...6708...13849..230069..346368.8462114.12237077
....72...352...12859..15374..230069..308384.3028801.4938602
...168...776...20377..61477..346368.3028801
...664..1752..327082.142610.8462114
..1632..3696..517062.503050
..5376..7904.8613707
.13152.16288
.47968
LINKS
EXAMPLE
Some solutions for n=4 k=4
..0..1..2..1....0..1..0..2....0..1..2..1....0..1..0..1....0..0..0..1
..2..2..2..0....2..1..1..1....2..1..1..0....2..2..2..2....2..1..2..0
..0..1..1..1....1..0..1..1....1..1..1..2....1..2..1..0....0..0..0..0
..2..1..2..0....2..1..2..0....0..2..0..1....2..0..2..2....1..2..1..2
CROSSREFS
Column 1 is A222848
Sequence in context: A136697 A136761 A136698 * A292522 A243197 A319048
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 20 2013
STATUS
approved