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A147148 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1100-0111-0010 pattern in any orientation. 0

%I #4 Mar 31 2012 12:35:15

%S 1,1,1,1,1,1,1,1,235,445,4871,12101,166515,463179,23308741,79047775,

%T 13213403375,57895847749,14383899135941,78923584929677,

%U 26055907898557893,175611010189141581

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1100-0111-0010 pattern in any orientation.

%e Maximal 9 X 9 example

%e .0.0.0.0.0.0.0.0.0

%e .0.0.0.0.0.0.0.0.0

%e .1.0.0.0.0.0.0.0.1

%e .1.1.0.0.0.0.0.1.1

%e .0.1.1.1.0.1.1.1.0

%e .1.0.1.0.0.0.1.0.1

%e .1.1.0.0.0.0.0.1.1

%e .0.1.1.1.0.1.1.1.0

%e .0.0.1.0.0.0.1.0.0

%K nonn

%O 1,9

%A _R. H. Hardin_, Nov 04 2008

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)