A278654 Number of nX6 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes.

77, 235446, 159247403, 71471902148, 25885621037640, 8050796188459694, 2208684003726307854, 542480212289851122353, 120541770267352306944197, 24447675261852941312290800, 4562394192215182263825547747

Offset

1,1

Comments

Column 6 of A278656.

Links

R. H. Hardin, Table of n, a(n) for n = 1..47

Example

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

Crossrefs

Cf. A278656.

Sequence in context: A196543 A201983 A278370 * A331630 A098024 A117330

Adjacent sequences: A278651 A278652 A278653 * A278655 A278656 A278657

Keyword

nonn

Author

R. H. Hardin, Nov 25 2016

Status

approved