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A278651 Number of nX3 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes. 1
0, 24, 3626, 210616, 6920404, 159247403, 2864009499, 42845787540, 554117433244, 6355099136464, 65799797930768, 623184291450452, 5453523684543697, 44451113263114337, 339679040853270337, 2446811447909875619 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 3 of A278656.

LINKS

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

R. H. Hardin, Empirical polynomial of degree 97

FORMULA

Empirical polynomial of degree 97 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Cf. A278656.

Sequence in context: A061530 A275637 A223123 * A166768 A326120 A159399

Adjacent sequences:  A278648 A278649 A278650 * A278652 A278653 A278654

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 25 2016

STATUS

approved

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Last modified October 15 15:14 EDT 2019. Contains 328030 sequences. (Running on oeis4.)