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A278549 Number of nX3 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes. 1
4, 1531, 124564, 6207774, 256173362, 9647190761, 327443433750, 9777854836324, 255595250091256, 5894080544358413, 121339401663068582, 2256920347962876651, 38335567041339845608, 600100691863091778854, 8724164918493189698726 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A278553.

LINKS

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

R. H. Hardin, Empirical polynomial of degree 191

FORMULA

Empirical polynomial of degree 191 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Cf. A278553.

Sequence in context: A094546 A203035 A030253 * A229664 A265661 A280793

Adjacent sequences:  A278546 A278547 A278548 * A278550 A278551 A278552

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 23 2016

STATUS

approved

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Last modified October 23 04:06 EDT 2021. Contains 348211 sequences. (Running on oeis4.)