A278632 Number of nX6 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.

357, 175881, 48592635, 11719632199, 2593097277036, 521528860552802, 94782697883923436, 15624069731088285787, 2357725621673408985921, 329332639476242364241409, 43040255418713805460253898

Offset: 1

Author

R. H. Hardin, Nov 24 2016

Keywords

• nonn

Comments

Column 6 of A278634.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..46

Crossrefs

Cf. A278634.