A278633 Number of nX7 0..2 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.

1107, 932205, 541463431, 309971214338, 175644502146694, 94782697883923436, 47369705674953303984, 21685396319356730003339, 9098829152955190125398905, 3522319073864419078316881080, 1269570351401707348639148214535

Offset: 1

Author

R. H. Hardin, Nov 24 2016

Keywords

• nonn

Comments

Column 7 of A278634.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..19

Crossrefs

Cf. A278634.