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URL: https://oeis.org/A229317

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A229317
Number of nX4 0..3 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1)X5 0..3 array without adjacent equal elements in the latter.
1
176, 13968, 717882, 33330044, 1520769276, 69027667944, 3129534386120, 141829123448362, 6426529323002908, 291187328893574164, 13193327853132680288, 597771666844708003058, 27084059447325490757312
OFFSET
1,1
COMMENTS
Column 4 of A229320
LINKS
EXAMPLE
Some solutions for n=2
..1..1..2..3....2..1..0..1....3..2..3..0....2..2..1..1....3..1..1..3
..2..2..2..0....2..1..3..1....2..3..1..2....3..1..2..3....0..2..2..0
CROSSREFS
Sequence in context: A283730 A083961 A158818 * A035829 A284073 A298250
KEYWORD
nonn
AUTHOR
R. H. Hardin, Sep 19 2013
STATUS
approved