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A278891 Number of nX3 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes. 1
0, 161, 52424, 6888340, 518626568, 27351484380, 1123462079180, 38208069702548, 1117773552649752, 28854012889071265, 669117722718849452, 14125545954412619268, 274254133053070192532, 4937202122626940281323 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A278896.

LINKS

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

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Cf. A278896.

Sequence in context: A207012 A203334 A272355 * A232294 A203053 A232367

Adjacent sequences:  A278888 A278889 A278890 * A278892 A278893 A278894

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 30 2016

STATUS

approved

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Last modified September 25 10:30 EDT 2020. Contains 337337 sequences. (Running on oeis4.)