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A210153 1/4 the number of (n+1)X6 0..3 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences 1
2433709, 5997955680, 14734218092801, 36208249913281496, 88975418528153598168, 218642562001425020608504, 537278068297042230986389307, 1320272420115802027617060782841 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A210156
LINKS
EXAMPLE
Some solutions for n=4
..3..1..1..3..2..1....1..1..3..1..0..0....3..0..0..3..0..3....2..1..1..2..1..1
..1..1..0..3..2..3....1..0..2..3..2..1....2..2..0..2..2..3....0..2..0..0..0..0
..3..0..0..2..2..3....1..0..3..3..0..1....0..0..1..0..3..3....2..1..1..0..2..1
..2..0..1..0..2..0....0..0..3..2..3..1....3..3..1..3..1..0....0..1..0..2..2..1
..1..2..1..3..0..0....1..2..0..2..0..0....0..3..0..1..1..1....0..3..1..0..1..1
CROSSREFS
Sequence in context: A251805 A184669 A184569 * A144588 A022216 A257195
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 18 2012
STATUS
approved

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Last modified February 25 11:20 EST 2024. Contains 370325 sequences. (Running on oeis4.)