login
A267752
Number of 4Xn arrays containing n copies of 0..4-1 with every element equal to or 1 greater than any north neighbor modulo 4 and the upper left element equal to 0.
1
1, 8, 118, 2386, 54956, 1350674, 34568612, 910791802, 24537293344, 672857207788, 18718820026952, 527018609703106, 14988164468962816, 429939684328203092, 12424959589420164728, 361409602487910188762, 10572662501852062471576
OFFSET
1,2
COMMENTS
Row 4 of A267751.
LINKS
EXAMPLE
Some solutions for n=4
..0..0..3..2....0..3..3..1....0..3..1..3....0..2..0..2....0..1..1..3
..1..1..3..2....1..0..0..2....1..3..2..0....1..2..0..3....0..2..1..3
..2..1..0..2....2..0..1..3....2..0..2..0....1..3..1..3....0..2..2..3
..3..1..0..3....2..1..2..3....3..1..2..1....1..0..2..3....1..2..3..0
CROSSREFS
Cf. A267751.
Sequence in context: A342182 A194494 A230911 * A318009 A368911 A228752
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 20 2016
STATUS
approved