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A147493 Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only in a 11101-10111 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 1, 3, 5, 9, 15, 23, 35, 101 (list; graph; refs; listen; history; internal format)
OFFSET

1,9

EXAMPLE

Maximal 9 X 9 example

.0.0.1.0.1.1.1.0.0

.0.0.1.1.1.0.1.0.0

.1.1.0.0.0.0.0.1.1

.0.1.0.0.0.0.0.0.1

.1.1.0.0.0.0.0.1.1

.1.0.0.0.0.0.0.1.0

.1.1.0.0.0.0.0.1.1

.0.0.1.0.1.1.1.0.0

.0.0.1.1.1.0.1.0.0

CROSSREFS

Sequence in context: A027688 A118403 A033498 * A178961 A147509 A057259

Adjacent sequences:  A147490 A147491 A147492 * A147494 A147495 A147496

KEYWORD

nonn

AUTHOR

R. H. Hardin (rhhardin(AT)att.net)

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Last modified February 17 16:49 EST 2012. Contains 206058 sequences.