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A163046 Number of n X n binary arrays with all 1s connected, and all corners 1 0
1, 1, 12, 540, 101950, 75185550, 210133770712 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..7.

CROSSREFS

Sequence in context: A285748 A184423 A064344 * A193381 A224539 A210816

Adjacent sequences:  A163043 A163044 A163045 * A163047 A163048 A163049

KEYWORD

nonn

AUTHOR

R. H. Hardin Jul 20 2009

STATUS

approved

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Last modified May 22 04:02 EDT 2019. Contains 323473 sequences. (Running on oeis4.)