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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
1, 36, 774, 20592, 583806, 17355854, 531710144, 16794345016, 539934522405, 17688694779704, 587032342194893, 19721653849177246, 669000415874942986, 22891346830054677219, 789053202525296020838, 27375922414889330681650
OFFSET
1,2
COMMENTS
Row 4 of A265192.
LINKS
EXAMPLE
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
CROSSREFS
Cf. A265192.
Sequence in context: A320821 A144941 A036084 * A280123 A004338 A228331
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 04 2015
STATUS
approved