A278383 Number of nX6 0..1 arrays with rows and columns in lexicographic nondecreasing order but with exactly three mistakes.

1, 1350, 100807, 4703562, 179716850, 6204309386, 198563803019, 5851197688577, 157794170262819, 3912513274701995, 90233123783207419, 1960361831058212555, 40518771843257636636, 801152317698519068308, 15177259705860270641696

Offset

1,2

Comments

Column 6 of A278385.

Links

R. H. Hardin, Table of n, a(n) for n = 1..153

Example

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

Crossrefs

Cf. A278385.

Sequence in context: A224743 A260542 A307218 * A174638 A154375 A243132

Adjacent sequences: A278380 A278381 A278382 * A278384 A278385 A278386

Keyword

nonn

Author

R. H. Hardin, Nov 20 2016

Status

approved