A242467 Number of length n+2 0..n arrays with no three equal elements in a row and new values 0..n introduced in 0..n order.

3, 11, 40, 158, 684, 3232, 16533, 90862, 533013, 3319374, 21844874, 151329961, 1099822975, 8361244270, 66320787389, 547602710173, 4697109624463, 41777867546600, 384671271459042, 3661037447467530, 35965775221739498

Offset: 1

Author

R. H. Hardin, May 15 2014

Keywords

• nonn

Comments

Diagonal of A242472.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..163

Crossrefs

Cf. A242472.