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A146398 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1111-0010 pattern in any orientation. 0

%I #4 Mar 31 2012 12:35:10

%S 1,1,1,1,1,1,17,21,669,1435,18879,48783,1539733,4958749,549583643,

%T 2274430177,407021932053,2127553253975,687811779125029,

%U 4505491241008645,2925616888695363409,24054886221768029249

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1111-0010 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.0.0.0.0.0.0

%e .0.0.0.0.0.0.0.0

%e .0.0.0.0.0.0.0.0

%e .0.0.0.0.0.0.0.0

%e .1.1.0.0.0.0.1.1

%e .0.1.0.0.0.0.1.0

%e .0.1.1.0.0.1.1.0

%e .0.1.0.0.0.0.1.0

%K nonn

%O 1,7

%A _R. H. Hardin_

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)