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A206093 Number of (n+1) X 8 0..2 arrays with every 2 X 3 or 3 X 2 subblock having exactly two counterclockwise and two clockwise edge increases. 1
205416, 165936, 240192, 1645920, 8613504, 56633472, 408445632, 2199502080, 14566314240, 105251128704, 567471536640, 3758109073920, 27154791205632, 146407656453120, 969592141071360, 7005936131053056, 37773175364904960 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A206094.
LINKS
FORMULA
Empirical: a(n) = 258*a(n-3) for n>10.
EXAMPLE
Some solutions for n=4:
..1..2..2..0..1..1..2..0....2..0..0..1..2..2..0..0....0..1..2..0..1..1..2..0
..0..1..2..2..0..1..1..2....0..0..1..2..2..0..1..1....1..1..2..2..0..1..1..2
..0..0..1..2..2..0..1..1....0..1..2..2..0..1..1..0....2..2..1..2..2..0..1..1
..1..0..0..1..2..2..0..0....1..2..2..0..1..1..0..1....0..2..2..0..2..2..0..1
..2..1..0..0..1..2..0..2....1..2..0..1..1..2..1..1....1..0..2..2..1..2..2..0
CROSSREFS
Cf. A206094.
Sequence in context: A237014 A218448 A234836 * A333015 A177006 A236033
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 03 2012
STATUS
approved

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Last modified March 28 17:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)