A268005 Number of 2Xn 0..n arrays with every repeated value in every row and column equal to the previous repeated value, and new values introduced in row-major sequential order.

2, 14, 187, 3552, 93311, 3201247, 137687080, 7202412402, 447845857496, 32517659156620, 2718146870737975, 258534983638151774, 27707842486101101991, 3318064979477703022623, 440767981147466114439164

Offset: 1

Author

R. H. Hardin, Jan 24 2016

Keywords

• nonn

Comments

Row 2 of A268003.

Examples

			Some solutions for n=5
..0..1..0..1..2....0..1..2..1..2....0..1..2..0..2....0..1..2..3..1
..1..3..0..4..4....1..1..0..3..1....3..3..0..3..4....4..0..4..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..26

Crossrefs

Cf. A268003.