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A186957 1/729 the number of (n+2)X6 0..2 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace 1
19881, 3277141, 373049827, 47796308777, 6014794685157, 760608010557461, 96133158385481199, 12152638841787524045, 1536155109102267515515, 194180664943334156035447, 24545745720495840084573061 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A186962

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..140

EXAMPLE

Some solutions for 4X6

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

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

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

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

CROSSREFS

Sequence in context: A194197 A250703 A256653 * A236907 A263298 A237564

Adjacent sequences:  A186954 A186955 A186956 * A186958 A186959 A186960

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 01 2011

STATUS

approved

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Last modified June 24 21:51 EDT 2022. Contains 354830 sequences. (Running on oeis4.)