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A267663 Number of n X 4 0..1 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order. 1
5, 50, 500, 3143, 18432, 98438, 508681, 2560344, 12721832, 62688891, 307514468, 1504686646, 7352965785, 35912894408, 175383062746, 856630710989, 4185293733440, 20456112775414, 100023287817835, 489294036823648 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A267667.
LINKS
FORMULA
Empirical recurrence of order 80 (see link above).
EXAMPLE
Some solutions for n=6
..0..1..0..0....0..0..1..1....0..1..0..0....0..1..0..0....0..0..1..0
..0..1..0..0....1..0..1..0....0..1..1..0....1..0..0..1....1..0..1..1
..0..1..0..0....1..0..1..1....1..0..1..0....1..1..0..0....0..1..1..0
..0..0..1..0....1..1..0..1....0..1..0..0....0..1..0..1....1..0..1..1
..1..1..0..1....0..0..1..1....0..0..1..0....1..1..0..1....1..0..1..0
..0..1..1..0....1..0..0..1....0..1..0..0....0..0..1..1....1..1..0..1
CROSSREFS
Cf. A267667.
Sequence in context: A136915 A136918 A136910 * A093143 A346937 A077330
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 19 2016
STATUS
approved

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Last modified June 25 13:13 EDT 2024. Contains 373705 sequences. (Running on oeis4.)