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A146180 Number of n X n binary arrays with all ones connected only in a 110-111-100 pattern in any orientation. 0
1, 1, 9, 33, 113, 1711, 59971, 1694043, 74822217, 7821008273, 1319866139817, 301739131956013, 120737110736027887 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..13.

EXAMPLE

Maximal 8 X 8 example

.0.0.0.1.1.1.0.0

.1.1.1.0.1.1.0.0

.1.1.0.0.1.0.1.1

.0.1.0.0.0.1.1.1

.0.0.1.1.1.0.0.1

.0.1.0.1.1.0.1.0

.1.1.0.1.0.0.1.1

.1.1.1.0.0.1.1.1

CROSSREFS

Sequence in context: A197359 A147155 A146232 * A221447 A147147 A147154

Adjacent sequences:  A146177 A146178 A146179 * A146181 A146182 A146183

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 27 2008

STATUS

approved

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Last modified May 25 10:05 EDT 2022. Contains 354066 sequences. (Running on oeis4.)