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A210331 1/4 the number of (n+1)X5 0..3 arrays with every 2X2 subblock having two or three distinct clockwise edge differences 1
43519, 10050240, 2266459861, 517186072378, 117888703860657, 26888341896724303, 6132398417786621509, 1398664622985458705816, 319003606034212278008442, 72757672377463379280503789 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A210335
LINKS
EXAMPLE
Some solutions for n=4
..2..0..3..3..0....1..0..0..0..0....1..0..0..1..0....0..3..3..0..1
..1..3..3..1..2....0..0..1..0..1....0..1..1..0..0....0..0..3..3..2
..2..2..1..1..2....3..3..2..3..2....3..2..0..1..0....1..1..2..1..1
..0..0..0..0..2....1..3..1..1..1....1..1..3..2..1....0..0..0..0..0
..1..1..0..2..2....1..1..1..2..1....3..2..2..1..1....0..1..1..2..0
CROSSREFS
Sequence in context: A126771 A103875 A224623 * A233690 A205923 A251995
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 20 2012
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)