A278302 - OEIS

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

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OFFSET

1,2

COMMENTS

Diagonal of A278309.

LINKS

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

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 17 2016

STATUS

approved