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A147429 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1010-1111-0101 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 9, 11, 141, 257, 1611, 3315, 36853, 86889, 1683453, 4577119, 233675247, 765781809, 58076270521, 224796831393, 21043320110887, 95183435001619, 14150257177280215, 74929440978446429, 19854826390795440105 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

LINKS

Table of n, a(n) for n=1..25.

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

.0.1.1.0.0.1.1.0

.1.1.0.0.0.0.1.1

.0.1.1.0.0.1.1.0

.1.1.0.0.0.0.1.1

CROSSREFS

Sequence in context: A027727 A019328 A119786 * A147461 A146366 A146603

Adjacent sequences: A147426 A147427 A147428 * A147430 A147431 A147432

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved

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Last modified March 28 19:22 EDT 2023. Contains 361596 sequences. (Running on oeis4.)