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A146382 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0110-1111 pattern in any orientation. 0
1, 1, 1, 7, 5, 40, 19, 418, 491, 27240, 24451, 2971576, 2078908, 614382155, 474528877, 322682051335, 262749927910, 400764203886592, 313224621598547, 1137774558755597994, 881352408772896894, 7433275932107389413579 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

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

EXAMPLE

Maximal 8 X 8 example

.1.0.1.1.1.1.0.1

.1.1.0.1.1.0.1.1

.1.1.0.0.0.0.1.1

.1.0.1.1.1.1.0.1

.0.1.0.1.1.0.1.0

.1.1.0.0.0.0.1.1

.1.1.0.0.0.0.1.1

.0.1.0.0.0.0.1.0

CROSSREFS

Sequence in context: A070426 A341431 A142883 * A163742 A202130 A089244

Adjacent sequences:  A146379 A146380 A146381 * A146383 A146384 A146385

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved

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Last modified October 22 01:48 EDT 2021. Contains 348160 sequences. (Running on oeis4.)