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A206647 Number of nX5 0..2 arrays with no occurrence of three equal elements in a row horizontally or vertically, and new values 0..2 introduced in row major order 1
30, 5400, 545520, 64166392, 7241587334, 826407481102, 94026798615720, 10706810410657410, 1218916563384756248, 138775670998651399066, 15799590241852733103686, 1798788750708910721959118 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A206650

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A341875 A204975 A204702 * A321427 A050984 A169686

Adjacent sequences:  A206644 A206645 A206646 * A206648 A206649 A206650

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 11 2012

STATUS

approved

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Last modified September 20 19:27 EDT 2021. Contains 347589 sequences. (Running on oeis4.)