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A204887 Number of (n+2)X5 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically or nw-to-se diagonally, and new values 0..2 introduced in row major order 1
667323, 75253867, 8701605702, 903927237183, 98052864809232, 10659390891595055, 1149089581382093469, 124287568065325704231, 13445654382007212367253, 1453624500999002952230942 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A204889

LINKS

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

EXAMPLE

Some solutions for n=3

..0..0..0..0..1....0..0..0..0..0....0..0..0..0..0....0..0..1..1..1

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

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

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

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

CROSSREFS

Sequence in context: A270801 A162840 A233817 * A251503 A084977 A049499

Adjacent sequences:  A204884 A204885 A204886 * A204888 A204889 A204890

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 20 2012

STATUS

approved

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Last modified April 14 01:17 EDT 2021. Contains 342941 sequences. (Running on oeis4.)