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A205309 Number of n X 7 0..3 arrays with no occurrence of three equal elements in a row horizontally or vertically, and new values 0..3 introduced in row major order. 0
528, 6427791, 50933680120, 442834241887042, 3775750320744043966, 32325164995795813807941 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for n=5

..0..0..1..0..0..1..1....0..1..2..2..1..0..0....0..1..1..0..0..2..3

..2..1..0..1..3..1..3....3..0..0..1..1..2..3....3..0..0..2..1..3..2

..3..1..1..3..0..2..0....3..3..2..0..0..2..1....0..1..0..2..0..1..2

..0..2..0..0..1..1..3....1..3..1..0..0..1..0....1..3..1..0..1..3..3

..3..0..3..1..1..3..2....2..0..2..1..1..0..3....2..0..2..2..1..1..0

CROSSREFS

Column 7 of A205310.

Sequence in context: A233255 A204684 A205160 * A045788 A181414 A020289

Adjacent sequences:  A205306 A205307 A205308 * A205310 A205311 A205312

KEYWORD

nonn

AUTHOR

R. H. Hardin, Jan 25 2012

STATUS

approved

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Last modified October 16 13:51 EDT 2019. Contains 328093 sequences. (Running on oeis4.)