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A278431 Number of nX3 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake. 1
40, 1609, 57760, 2116789, 67971132, 1796061464, 39513263094, 743248079740, 12242795030458, 179948822861856, 2394561544941994, 29174653111810701, 328380943500399272, 3439574456695348801, 33729578625174035514 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A278435.

LINKS

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

R. H. Hardin, Empirical polynomial of degree 127

FORMULA

Empirical polynomial of degree 127 (see link above)

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Cf. A278435.

Sequence in context: A009984 A041761 A229635 * A229584 A140702 A223609

Adjacent sequences:  A278428 A278429 A278430 * A278432 A278433 A278434

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 22 2016

STATUS

approved

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Last modified September 20 12:42 EDT 2018. Contains 315239 sequences. (Running on oeis4.)