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A222516 Number of nX2 0..3 arrays with exactly floor(nX2/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order 1
0, 0, 0, 9, 0, 114, 0, 1881, 0, 33828, 0, 624019, 0, 11640594, 0, 218436985, 0, 4115818812, 0, 77807963106, 0, 1475137178140, 0, 28037418382435, 0, 534101042736588, 0, 10195012207704303, 0, 194958882346128666, 0 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
COMMENTS
Column 2 of A222522
LINKS
EXAMPLE
All solutions for n=4
..0..0....0..0....0..0....0..0....0..1....0..0....0..1....0..1....0..0
..1..1....0..0....0..0....0..0....2..2....0..0....0..0....1..1....0..0
..1..1....1..1....0..0....0..0....2..2....0..0....0..0....1..1....0..0
..1..1....1..1....0..1....1..0....2..2....1..1....0..0....1..1....1..2
CROSSREFS
Sequence in context: A167319 A231948 A222396 * A057403 A339488 A157309
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 23 2013
STATUS
approved

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Last modified April 18 06:24 EDT 2024. Contains 371769 sequences. (Running on oeis4.)