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A278605 Number of nX2 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly three mistakes. 1
0, 0, 395, 16224, 354696, 6208804, 94510277, 1235465691, 13780447802, 132510394588, 1117003717258, 8394295309778, 57076381840494, 355509912080514, 2049367954200226, 11026586497658309, 55766838990035825, 266680636061199341 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Column 2 of A278610.

LINKS

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

R. H. Hardin, Empirical polynomial of degree 63

FORMULA

Empirical polynomial of degree 63 (see link above)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Cf. A278610.

Sequence in context: A267965 A268030 A278610 * A278269 A278606 A230450

Adjacent sequences:  A278602 A278603 A278604 * A278606 A278607 A278608

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 23 2016

STATUS

approved

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Last modified September 28 10:48 EDT 2021. Contains 347714 sequences. (Running on oeis4.)