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A146695 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1100-1100-0111 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 3, 9, 9, 23, 23, 49, 49, 265, 265, 1763, 1763 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,11

LINKS

Table of n, a(n) for n=1..22.

EXAMPLE

Maximal 11 X 11 example

.0.0.1.1.0.0.0.1.1.0.0

.0.0.1.1.1.0.1.1.1.0.0

.1.1.0.0.1.0.1.0.0.1.1

.1.1.0.0.1.0.1.0.0.1.1

.0.1.1.1.0.0.0.1.1.1.0

.0.0.0.0.0.0.0.0.0.0.0

.0.1.1.1.0.0.0.1.1.1.0

.1.1.0.0.1.0.1.0.0.1.1

.1.1.0.0.1.0.1.0.0.1.1

.0.0.1.1.1.0.1.1.1.0.0

.0.0.1.1.0.0.0.1.1.0.0

CROSSREFS

Sequence in context: A146911 A146250 A232023 * A146442 A147128 A147214

Adjacent sequences:  A146692 A146693 A146694 * A146696 A146697 A146698

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved

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Last modified August 9 07:38 EDT 2022. Contains 356019 sequences. (Running on oeis4.)