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A147001 Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 00100-00100-11111 pattern in any orientation. 0

%I #4 Mar 31 2012 12:35:14

%S 1,1,1,1,1,1,4,5,13,19,43,57,239,521,2347,5442,24758,63173,355006,

%T 1139569,7776109,29105899,223723640,955226817,8533424348

%N Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 00100-00100-11111 pattern in any orientation.

%e Maximal 8 X 8 example

%e .0.0.1.1.1.1.1.0

%e .1.0.0.0.1.0.0.0

%e .1.0.0.0.1.0.0.1

%e .1.1.1.0.0.0.0.1

%e .1.0.0.0.0.1.1.1

%e .1.0.0.1.0.0.0.1

%e .0.0.0.1.0.0.0.1

%e .0.1.1.1.1.1.0.0

%K nonn

%O 1,7

%A _R. H. Hardin_, Nov 04 2008

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Last modified June 10 11:44 EDT 2023. Contains 363205 sequences. (Running on oeis4.)