A278367 Number of nX3 0..2 arrays with rows and columns in lexicographic nondecreasing order but with exactly three mistakes.

0, 59, 3766, 184341, 5897660, 138641633, 2705568336, 46817185633, 733865213852, 10436129552575, 134500209406905, 1574376228128520, 16823886495202722, 165209993322147396, 1501159407870244666, 12704143377811774222

Offset

1,2

Comments

Column 3 of A278372.

Links

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

R. H. Hardin, Empirical polynomial of degree 107

Formula

Empirical polynomial of degree 107 (see link above)

Example

Some solutions for n=4
..2..0..0. .2..0..0. .1..0..1. .1..0..2. .2..0..2. .2..0..0. .2..0..1
..2..2..0. .2..1..0. .0..2..0. .0..0..0. .0..0..1. .1..1..2. .1..0..0
..2..2..1. .0..1..2. .0..2..1. .2..1..0. .2..1..2. .2..1..0. .0..1..1
..0..0..0. .2..1..2. .0..1..0. .2..0..2. .1..2..2. .1..0..0. .2..2..0

Crossrefs

Cf. A278372.

Sequence in context: A263508 A119886 A135649 * A198509 A258269 A094489

Adjacent sequences: A278364 A278365 A278366 * A278368 A278369 A278370

Keyword

nonn

Author

R. H. Hardin, Nov 19 2016

Status

approved