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A204975 Number of nX5 0..2 arrays with no occurrence of three equal elements in a row horizontally, vertically, diagonally or antidiagonally, and new values 0..2 introduced in row major order 1
30, 5400, 226908, 11815256, 594430765, 30057359681, 1519010368414, 76757855124562, 3878731054806384, 196001179244804717, 9904372451888881080, 500490203444826245265, 25290888836528806246336, 1278005232465153039958786 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A204978

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A159401 A288033 A341875 * A204702 A206647 A321427

Adjacent sequences:  A204972 A204973 A204974 * A204976 A204977 A204978

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 21 2012

STATUS

approved

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Last modified October 25 11:13 EDT 2021. Contains 348246 sequences. (Running on oeis4.)