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A147170 Number of n X n binary arrays with all ones connected only in a 1000-1111-0010-0010 pattern in any orientation. 0
1, 1, 1, 9, 33, 81, 501, 9129, 252307, 4894765, 134053463, 8030367567, 812329207639 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,4
LINKS
EXAMPLE
Maximal 8 X 8 example
.0.1.0.0.1.1.0.0
.0.1.1.1.0.1.0.0
.0.1.0.0.0.1.1.1
.1.1.0.0.0.1.0.0
.0.0.1.0.0.0.0.1
.0.0.1.0.1.1.1.1
.1.1.1.1.0.1.0.0
.1.0.0.0.0.1.0.0
CROSSREFS
Sequence in context: A227221 A273316 A101990 * A146823 A147027 A146256
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)