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A146792 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0110-0100-1111 pattern in any orientation. 0

%I #4 Mar 31 2012 12:35:13

%S 1,1,1,1,1,1,17,29,597,1129,8865,24301,252485,677761,72037073,

%T 260058405,50790437661,228224469561,29783355194457,163753391774397,

%U 29294065583268725,187282551074891489

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 0110-0100-1111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.1.0.0.1.0.0

%e .1.0.1.0.0.1.0.1

%e .1.1.1.0.0.1.1.1

%e .0.0.1.0.0.1.0.0

%e .1.0.0.0.0.0.0.1

%e .1.0.1.0.0.1.0.1

%e .1.1.1.0.0.1.1.1

%e .1.0.0.0.0.0.0.1

%K nonn

%O 1,7

%A _R. H. Hardin_, Nov 04 2008

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Last modified December 7 07:48 EST 2023. Contains 367630 sequences. (Running on oeis4.)