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A147347 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 01010-11111-00100 pattern in any orientation. 0
1, 1, 1, 1, 7, 1, 25, 9, 149, 33, 5089, 931, 204509, 26325, 14205068, 1129487, 2130205171, 121812575, 553442984916, 24953439069, 285966193523255, 9101315937099, 294148529555161566, 6619074013350903 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

Table of n, a(n) for n=1..24.

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

.0.1.0.0.0.0.1.0

.0.1.1.0.0.1.1.0

.1.1.0.0.0.0.1.1

.0.1.1.0.0.1.1.0

.0.1.0.0.0.0.1.0

CROSSREFS

Sequence in context: A211790 A064051 A147385 * A183109 A082172 A053288

Adjacent sequences:  A147344 A147345 A147346 * A147348 A147349 A147350

KEYWORD

nonn

AUTHOR

R. H. Hardin

STATUS

approved

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Last modified April 15 23:37 EDT 2021. Contains 343007 sequences. (Running on oeis4.)