A265194 Number of 4Xn arrays containing n copies of 0..4-1 with no equal horizontal or antidiagonal neighbors and new values introduced sequentially from 0.

1, 36, 774, 20592, 583806, 17355854, 531710144, 16794345016, 539934522405, 17688694779704, 587032342194893, 19721653849177246, 669000415874942986, 22891346830054677219, 789053202525296020838, 27375922414889330681650

Offset: 1

Author

R. H. Hardin, Dec 04 2015

Keywords

• nonn

Comments

Row 4 of A265192.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..23

Crossrefs

Cf. A265192.