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A147495 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 11101-10111 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 5, 15, 25, 49, 107, 263, 719, 2181 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,8

LINKS

Table of n, a(n) for n=1..15.

EXAMPLE

Maximal 8 X 8 example

.1.0.1.1.1.0.1.1

.1.1.1.0.1.0.1.0

.0.0.0.0.0.0.1.1

.1.1.0.0.0.0.0.1

.1.0.0.0.0.0.1.1

.1.1.0.0.0.0.0.0

.0.1.0.1.0.1.1.1

.1.1.0.1.1.1.0.1

CROSSREFS

Sequence in context: A168010 A229312 A197072 * A147426 A100437 A339567

Adjacent sequences:  A147492 A147493 A147494 * A147496 A147497 A147498

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved

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Last modified July 26 20:29 EDT 2021. Contains 346295 sequences. (Running on oeis4.)