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A265871 Number of 3Xn arrays containing n copies of 0..3-1 with no element plus any antidiagonal neighbor equal to 3-1. 1
6, 42, 340, 3136, 30456, 307464, 3182784, 33588630, 359679572, 3896854004, 42621505752, 469855280984, 5214136065200, 58192269283872, 652647993512352, 7351118301680664, 83112561412246944, 942832221757264300 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 3 of A265870.
LINKS
EXAMPLE
Some solutions for n=4
..2..0..1..1....2..1..1..2....0..1..0..1....2..0..2..1....0..1..2..1
..1..0..2..0....0..0..1..0....2..0..2..2....1..1..0..0....0..2..0..1
..1..2..0..2....1..2..0..2....0..2..1..1....2..0..1..2....2..0..2..1
CROSSREFS
Cf. A265870.
Sequence in context: A001725 A361547 A123510 * A132804 A232473 A300693
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 17 2015
STATUS
approved

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Last modified June 24 22:33 EDT 2024. Contains 373690 sequences. (Running on oeis4.)