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A147091 Number of n X n binary arrays with all ones connected only in a 1000-1000-1000-1111 pattern in any orientation. 0
1, 1, 1, 5, 19, 87, 337, 1993, 25339, 376795, 8378039, 203827787, 6728351645, 320530236227 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

Maximal 8 X 8 example

.0.1.1.1.1.0.0.0

.0.1.0.0.0.1.0.0

.0.1.0.0.0.1.0.0

.0.1.0.0.0.1.0.1

.1.0.1.1.1.1.0.1

.1.0.0.0.0.0.0.1

.1.0.0.0.1.1.1.1

.1.1.1.1.0.0.0.0

CROSSREFS

Sequence in context: A005191 A324595 A275027 * A149797 A149798 A149799

Adjacent sequences: A147088 A147089 A147090 * A147092 A147093 A147094

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved

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Last modified March 26 17:26 EDT 2023. Contains 361551 sequences. (Running on oeis4.)