A278606 Number of nX3 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly three mistakes.

0, 395, 53360, 5985658, 442089480, 23974522382, 1079873605870, 43032494710944, 1543764930874168, 49834351539480647, 1446202850114983762, 37846411522577242503, 898595003941582092008, 19500004359246529094765

Offset

1,2

Comments

Column 3 of A278610.

Links

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

Example

Some solutions for n=3
..3..1..0. .3..2..2. .3..3..2. .3..3..0. .3..2..3. .3..0..0. .3..3..1
..0..0..3. .3..2..2. .1..1..1. .1..0..3. .2..1..1. .1..2..0. .1..3..2
..3..2..2. .1..2..0. .3..1..2. .3..2..3. .0..3..3. .2..0..0. .1..2..2

Crossrefs

Cf. A278610.

Sequence in context: A278610 A278605 A278269 * A230450 A247989 A126078

Adjacent sequences: A278603 A278604 A278605 * A278607 A278608 A278609

Keyword

nonn

Author

R. H. Hardin, Nov 23 2016

Status

approved