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A266321
Number of 5Xn arrays containing n copies of 0..5-1 with no element 1 greater than its west or north neighbor modulo 5 and the upper left element equal to 0.
0
9, 1007, 203051, 51862494, 15059945769, 4723795604740, 1561571407082978, 536705864148249261
OFFSET
1,1
COMMENTS
Row 5 of A266318.
EXAMPLE
Some solutions for n=2
..0..3....0..3....0..2....0..4....0..2....0..3....0..3....0..2....0..2....0..0
..2..2....3..2....3..0....3..1....2..0....2..1....4..2....4..1....2..4....4..3
..0..4....1..4....3..2....2..0....1..4....0..4....3..2....4..1....4..3....1..3
..4..1....4..2....1..4....2..4....1..3....4..2....1..0....3..3....1..1....4..2
..1..3....1..0....4..1....1..3....4..3....3..1....1..4....2..0....0..3....2..1
CROSSREFS
Cf. A266318.
Sequence in context: A350967 A100601 A260029 * A228293 A197781 A197612
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 27 2015
STATUS
approved