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A221228 Number of nX4 arrays of occupancy after each element moves to some king-move neighbor, with no occupancy greater than 2 0
4, 1033, 65453, 4581973, 322610120, 23035350108, 1652940878370, 118885924289161, 8558151176825984, 616265885110474351, 44381234970536270542, 3196241880309292793297 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A221229
LINKS
EXAMPLE
Some solutions for n=3
..1..1..0..0....2..0..1..2....2..0..0..0....1..0..1..1....1..1..1..2
..2..0..2..1....0..2..0..0....2..1..1..1....2..0..2..0....0..2..0..0
..2..2..1..0....2..1..2..0....2..1..0..2....0..2..2..1....1..0..2..2
CROSSREFS
Sequence in context: A013780 A139300 A004804 * A159859 A110499 A009013
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 05 2013
STATUS
approved

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Last modified March 2 14:55 EST 2024. Contains 370493 sequences. (Running on oeis4.)