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A147231 Number of n X n binary arrays with all ones connected only in a 1101-0111-0001 pattern in any orientation. 0
1, 1, 1, 17, 65, 377, 4203, 88657, 2446623, 84129749, 4724716047, 438716446587 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Maximal 8 X 8 example

.1.0.1.1.0.1.1.1

.1.1.1.0.0.0.1.0

.1.0.0.0.0.1.1.0

.0.0.0.0.0.1.0.1

.1.1.1.0.1.0.1.1

.0.1.0.1.1.0.1.0

.1.1.0.1.0.1.1.1

.1.0.1.1.1.0.0.0

CROSSREFS

Sequence in context: A036545 A146807 A156570 * A146815 A360818 A216143

Adjacent sequences: A147228 A147229 A147230 * A147232 A147233 A147234

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved

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Last modified March 27 05:43 EDT 2023. Contains 361554 sequences. (Running on oeis4.)