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A205274 Number of (n+1)X3 0..3 arrays with rows and columns of permanents of all 2X2 subblocks lexicographically nondecreasing 1
2504, 87912, 2940732, 77255835, 1905682493, 40440032498, 815438067758, 15104514591436, 270214374017756, 4624070809987435, 77603848289590015, 1276770295413373726, 20837216097787580754, 337831908519292150785 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A205277

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A031548 A045216 A205175 * A234790 A251858 A251854

Adjacent sequences: A205271 A205272 A205273 * A205275 A205276 A205277

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 24 2012

STATUS

approved

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Last modified February 3 23:01 EST 2023. Contains 360045 sequences. (Running on oeis4.)