A278892 Number of nX4 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes.

1, 12392, 6888340, 2058210408, 430110958155, 69420349158080, 9164480794983836, 1029371666008338780, 101224646155024674325, 8900210716755685218198, 710786174826504133948822, 52173165758812211838931296

Offset

1,2

Comments

Column 4 of A278896.

Links

R. H. Hardin, Table of n, a(n) for n = 1..133

Example

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

Crossrefs

Cf. A278896.

Sequence in context: A140938 A202563 A061731 * A248084 A224120 A233964

Adjacent sequences: A278889 A278890 A278891 * A278893 A278894 A278895

Keyword

nonn

Author

R. H. Hardin, Nov 30 2016

Status

approved