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A210352 1/4 the number of (n+1)X6 0..3 arrays with every 2X2 subblock having one, two or three distinct clockwise edge differences 1
530580, 416960476, 320128196268, 248817068842201, 193382034306882852, 150365005774145044378, 116921261170364094516762, 90917952546400064866847175, 70698050852648393486040104724 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A210355

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=4

..1..2..0..2..0..1....3..1..2..0..2..2....3..0..0..2..1..1....1..3..2..1..1..1

..0..0..2..2..2..1....1..3..0..0..1..0....0..3..3..1..1..0....1..2..3..3..1..0

..1..0..2..0..0..3....2..2..1..1..0..0....2..1..1..1..0..0....2..1..3..2..1..1

..0..1..1..3..3..3....0..0..0..0..1..0....1..0..0..0..1..2....0..3..1..1..2..1

..2..1..1..1..2..1....1..0..3..3..2..3....0..0..3..0..1..0....3..0..2..1..3..2

CROSSREFS

Sequence in context: A215999 A219334 A340304 * A321828 A038682 A017082

Adjacent sequences:  A210349 A210350 A210351 * A210353 A210354 A210355

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 20 2012

STATUS

approved

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Last modified October 19 18:31 EDT 2021. Contains 348091 sequences. (Running on oeis4.)