A268424 Number of 4Xn 0..3 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order.

14, 2530, 467899, 92967597, 17282463434, 3197637400309, 577216284723410, 103129350712869051, 18199468798597838146, 3185845262388985273409, 553601961042772734126748, 95663189554686667773844253

Offset: 1

Author

R. H. Hardin, Feb 04 2016

Keywords

• nonn

Comments

Row 4 of A268423.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..41

Crossrefs

Cf. A268423.