login
A267547
Number of 4Xn arrays containing n copies of 0..4-1 with no element 1 greater than its north, west or southeast neighbor modulo 4 and the upper left element equal to 0.
1
2, 27, 255, 3527, 51759, 852932, 14954188, 273141379, 5179064643, 100829282975, 2002465966258, 40428770929803, 827090165579327, 17105221165373796, 357027788626167770, 7510894690703464379, 159088048372227390425
OFFSET
1,1
COMMENTS
Row 4 of A267546.
LINKS
EXAMPLE
Some solutions for n=4
..0..3..2..2....0..2..1..3....0..2..1..0....0..0..2..1....0..2..0..2
..3..1..0..2....3..1..0..2....2..1..3..3....3..2..1..3....3..1..0..2
..1..0..3..2....3..3..2..1....2..0..3..1....1..1..0..3....3..3..2..1
..0..3..1..1....2..1..0..0....0..3..2..1....0..3..2..2....1..1..0..3
CROSSREFS
Cf. A267546.
Sequence in context: A049070 A197316 A175529 * A302174 A195604 A011543
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 16 2016
STATUS
approved