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A146579 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0100-1100-0111 pattern in any orientation. 0
1, 1, 1, 1, 1, 1, 19, 35, 679, 1365, 22713, 61459, 2460007, 8324377, 1000960863, 4362315603, 920463675841, 5070018879619, 1889649557770845, 13120916750335663, 10628808830660687857, 93523395817222374455 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,7
LINKS
EXAMPLE
Maximal 8 X 8 example
.0.0.0.0.0.0.0.0
.0.1.0.0.0.0.1.0
.1.1.1.0.0.1.1.1
.0.0.1.0.0.1.0.0
.1.0.1.0.0.1.0.1
.1.0.0.0.0.0.0.1
.1.1.1.0.0.1.1.1
.0.1.0.0.0.0.1.0
CROSSREFS
Sequence in context: A044445 A166055 A333414 * A146454 A186405 A240238
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 04 2008
STATUS
approved

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Last modified May 30 18:38 EDT 2024. Contains 372971 sequences. (Running on oeis4.)