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A147390 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 10001-11111-00100 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 1, 5, 10, 19, 36, 65, 146, 407, 1091, 3253, 10430, 34729, 123767, 502614, 2115588, 9918395, 49148200, 263504620 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,8

LINKS

Table of n, a(n) for n=1..24.

EXAMPLE

Maximal 8 X 8 example

.0.0.1.0.0.1.1.0

.1.1.1.1.1.0.1.0

.1.0.0.0.1.0.1.1

.0.1.1.0.0.0.1.0

.0.1.0.0.0.1.1.0

.1.1.0.1.0.0.0.1

.0.1.0.1.1.1.1.1

.0.1.1.0.0.1.0.0

CROSSREFS

Sequence in context: A047882 A184260 A053311 * A300019 A115825 A115774

Adjacent sequences:  A147387 A147388 A147389 * A147391 A147392 A147393

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved

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Last modified August 19 20:20 EDT 2019. Contains 326133 sequences. (Running on oeis4.)