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A146470 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1110-0111 pattern in any orientation. 0
1, 1, 1, 1, 5, 7, 19, 35, 463, 969, 22041, 58321, 1701021, 5460085, 383363779, 1519453757, 207202049471, 1016198618209, 232688832421803, 1403058689772715, 628307720419918447, 4670279652295220195, 3965584480917103684129 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..23.

EXAMPLE

Maximal 8 X 8 example

.0.1.0.0.0.0.1.0

.0.1.1.0.0.1.1.0

.0.1.1.0.0.1.1.0

.0.0.1.0.0.1.0.0

.1.0.0.0.0.0.0.1

.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: A200178 A064101 A018581 * A296935 A106987 A342738

Adjacent sequences:  A146467 A146468 A146469 * A146471 A146472 A146473

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved

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Last modified October 26 04:45 EDT 2021. Contains 348256 sequences. (Running on oeis4.)