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.

1, 1, 1, 1, 7, 1, 25, 9, 149, 33, 5089, 931, 204509, 26325, 14205068, 1129487, 2130205171, 121812575, 553442984916, 24953439069, 285966193523255, 9101315937099, 294148529555161566, 6619074013350903

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