A278302 Number of n X n 0..2 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.

0, 32, 4558, 2360544, 6345491150, 100825279690194, 10174217016822816668, 6850575319751106211878878

Offset

1,2

Comments

Diagonal of A278309.

Links

Table of n, a(n) for n=1..8.

Example

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

Crossrefs

Cf. A278309.

Sequence in context: A291829 A248075 A248000 * A071310 A265371 A232913

Adjacent sequences: A278299 A278300 A278301 * A278303 A278304 A278305

Keyword

nonn

Author

R. H. Hardin, Nov 17 2016

Status

approved