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A186959 1/729 the number of (n+2)X8 0..2 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace 0
3281361, 2888274935, 1352397401223, 760608010557461, 411931941306416847, 226578401020498502579 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A186962

LINKS

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

EXAMPLE

Some solutions for 4X8

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

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

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

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

CROSSREFS

Sequence in context: A217111 A036471 A206316 * A186594 A244574 A250675

Adjacent sequences:  A186956 A186957 A186958 * A186960 A186961 A186962

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 01 2011

STATUS

approved

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Last modified August 13 04:54 EDT 2020. Contains 336442 sequences. (Running on oeis4.)