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A146386 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 0110-1111 pattern in any orientation. 0
1, 1, 1, 1, 1, 2, 1, 4, 1, 6, 3, 16, 10, 59, 29, 271, 100, 1436, 387, 8334, 2276, 60777, 17581, 593102, 155034, 7275019, 1632582, 107601705, 20304423, 1902586023 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

Table of n, a(n) for n=1..30.

EXAMPLE

Maximal 8 X 8 example

.0.0.0.0.0.0.0.0

.0.0.1.1.1.1.0.0

.0.1.0.1.1.0.1.0

.0.1.1.0.0.1.1.0

.0.1.1.0.0.1.1.0

.0.1.0.1.1.0.1.0

.0.0.1.1.1.1.0.0

.0.0.0.0.0.0.0.0

CROSSREFS

Sequence in context: A243824 A146938 A147418 * A305098 A128099 A182242

Adjacent sequences:  A146383 A146384 A146385 * A146387 A146388 A146389

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved

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Last modified July 17 14:44 EDT 2019. Contains 325106 sequences. (Running on oeis4.)