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A205615 Number of 8X(n+1) 0..3 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..3 introduced in row major order 0
9140400, 953231848, 74880118862, 9140244711946, 833667153942097, 109899225787392773 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 7 of A205609
LINKS
EXAMPLE
Some solutions for n=4
..0..0..0..0..0....0..0..0..0..0....0..1..0..2..2....0..0..0..0..0
..0..1..0..2..0....0..0..0..0..0....3..1..3..3..0....1..2..1..2..3
..1..0..2..0..1....0..1..0..2..0....1..1..3..0..0....2..0..3..0..1
..2..0..1..0..2....0..2..0..3..3....0..2..3..2..1....1..0..2..2..1
..3..2..3..1..3....2..2..0..3..0....3..0..1..3..0....0..0..0..2..2
..2..2..3..1..1....3..1..0..1..0....0..0..1..3..3....1..2..1..1..3
..3..0..0..0..2....1..0..2..0..1....1..2..2..2..0....1..1..1..3..3
..0..0..3..0..0....0..0..0..0..1....1..1..1..2..2....2..3..2..2..0
CROSSREFS
Sequence in context: A172620 A172711 A187675 * A251399 A206599 A245746
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 29 2012
STATUS
approved

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Last modified June 15 16:36 EDT 2024. Contains 373410 sequences. (Running on oeis4.)