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A146611 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1111-0110 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 17, 21, 613, 1249, 13923, 35499, 878873, 2681595, 245690631, 956048155, 150392601813, 733916941629, 176326135762271, 1064337095651755, 484338166495978939, 3619821636712367449 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

LINKS

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

EXAMPLE

Maximal 8 X 8 example

.0.0.0.0.0.0.0.0

.0.0.0.0.0.0.0.0

.0.0.0.0.0.0.0.0

.0.0.0.0.0.0.0.0

.0.1.0.0.0.0.1.0

.0.1.1.0.0.1.1.0

.0.1.1.0.0.1.1.0

.1.1.0.0.0.0.1.1

CROSSREFS

Sequence in context: A146643 A146715 A146848 * A146398 A146406 A066470

Adjacent sequences:  A146608 A146609 A146610 * A146612 A146613 A146614

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 04 2008

STATUS

approved

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Last modified December 2 05:01 EST 2021. Contains 349437 sequences. (Running on oeis4.)