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A146634 Number of n X n binary arrays with all ones connected only in a 1010-1111-0100 pattern in any orientation. 0
1, 1, 1, 17, 49, 309, 4193, 83267, 2435243, 97883893, 6457826001, 684365474903 (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

.1.1.0.0.0.0.1.0

.0.1.1.0.1.1.1.1

.1.1.0.0.0.1.0.1

.0.1.0.0.0.0.0.0

.0.0.0.0.0.0.1.1

.0.0.0.1.0.1.1.0

.0.1.1.1.1.0.1.1

.0.0.1.0.1.0.1.0

CROSSREFS

Sequence in context: A146862 A146586 A146626 * A146831 A146698 A146706

Adjacent sequences:  A146631 A146632 A146633 * A146635 A146636 A146637

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved

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Last modified September 21 15:47 EDT 2021. Contains 347598 sequences. (Running on oeis4.)