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A222651 Number of nX2 0..3 arrays with no more than floor(nX2/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..3 order 1
1, 7, 60, 724, 7364, 84816, 927152, 10585088, 119198624, 1364437632, 15584195392, 179262541056, 2063988209152, 23852186896896, 276080500860416, 3202923732204544, 37215026284325888, 433119059193262080 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 2 of A222654
LINKS
EXAMPLE
Some solutions for n=3
..0..1....0..1....0..0....0..0....0..0....0..1....0..1....0..1....0..1....0..1
..2..2....2..2....0..1....1..0....1..2....0..0....2..0....2..3....0..2....2..1
..0..1....1..2....2..3....2..3....0..3....2..3....3..0....1..0....3..0....3..1
CROSSREFS
Sequence in context: A241770 A243695 A210988 * A287689 A289874 A316124
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 27 2013
STATUS
approved

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Last modified June 13 15:51 EDT 2024. Contains 373389 sequences. (Running on oeis4.)