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A146722 Number of n X n binary arrays with all ones connected only in a 1101-0111 pattern in any orientation. 0
1, 1, 1, 25, 197, 1531, 31791, 876801, 39890653, 2918403939, 324467879601 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Maximal 8 X 8 example

.1.1.1.0.1.1.0.1

.1.0.1.1.0.1.1.1

.0.0.0.0.0.0.0.0

.1.1.0.1.0.1.1.0

.0.1.0.1.1.1.0.1

.1.1.0.0.0.0.1.1

.1.0.1.1.1.0.1.0

.0.1.1.0.1.0.1.1

CROSSREFS

Sequence in context: A017222 A271535 A146738 * A042210 A220677 A125362

Adjacent sequences:  A146719 A146720 A146721 * A146723 A146724 A146725

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved

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Last modified February 24 17:26 EST 2020. Contains 332209 sequences. (Running on oeis4.)