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A267663 Number of nX4 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

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 80

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 A077330 A113330

Adjacent sequences:  A267660 A267661 A267662 * A267664 A267665 A267666

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 19 2016

STATUS

approved

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Last modified February 20 15:20 EST 2019. Contains 320336 sequences. (Running on oeis4.)