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A198477 T(n,k)=Number of 2nX2k 0..2 arrays with values 0..2 introduced in row major order and each element equal to an odd number of horizontal and vertical neighbors 3
2, 12, 12, 76, 252, 76, 492, 6104, 6104, 492, 3212, 153222, 636636, 153222, 3212, 21036, 3935188, 72691500, 72691500, 3935188, 21036, 137932, 101884208, 8603604942 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
.....2......12.......76......492.......3212.....21036.137932
....12.....252.....6104...153222....3935188.101884208
....76....6104...636636.72691500.8603604942
...492..153222.72691500
..3212.3935188
.21036
LINKS
EXAMPLE
Some solutions for n=4 k=3
..0..0..0..0..1..1....0..0..0..0..0..1....0..0..0..0..0..0....0..0..0..0..0..0
..1..0..0..1..0..0....1..0..0..0..2..1....1..0..0..0..0..1....1..0..0..0..0..2
..1..0..0..1..2..2....1..0..1..0..2..0....1..0..1..2..0..1....1..0..2..2..0..2
..0..0..0..0..1..0....0..1..1..1..0..0....0..1..1..2..2..0....0..2..0..0..2..0
..1..1..2..2..1..0....0..2..2..2..1..0....0..0..1..2..1..0....0..2..1..1..2..0
..2..2..0..0..2..2....1..1..2..1..1..1....0..2..2..1..1..1....1..1..0..0..0..1
..0..1..2..1..0..0....0..2..0..2..0..2....1..0..1..2..0..0....0..2..1..0..2..1
..0..1..2..1..2..2....0..2..0..2..0..2....1..0..1..2..1..1....0..2..1..2..2..2
CROSSREFS
Sequence in context: A226393 A371375 A198532 * A075178 A145618 A306693
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Oct 25 2011
STATUS
approved

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Last modified June 19 13:40 EDT 2024. Contains 373503 sequences. (Running on oeis4.)