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A186958 1/729 the number of (n+2)X7 0..2 arrays with each 3X3 subblock trace equal to some horizontal or vertical neighbor 3X3 subblock trace 1
201495, 97400287, 22237406277, 6014794685157, 1557834542977401, 411931941306416847, 108124495560461502429, 28454687244738848695377, 7482086662398565239408367, 1967930140348277322040712515 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A186962

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..19

EXAMPLE

Some solutions for 4X7

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

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

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

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

CROSSREFS

Sequence in context: A179224 A237374 A202316 * A184406 A036319 A241060

Adjacent sequences:  A186955 A186956 A186957 * A186959 A186960 A186961

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 01 2011

STATUS

approved

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Last modified June 26 07:43 EDT 2022. Contains 354877 sequences. (Running on oeis4.)