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A147429 Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1010-1111-0101 pattern in any orientation. 0

%I #4 Mar 31 2012 12:35:17

%S 1,1,1,1,1,1,9,11,141,257,1611,3315,36853,86889,1683453,4577119,

%T 233675247,765781809,58076270521,224796831393,21043320110887,

%U 95183435001619,14150257177280215,74929440978446429,19854826390795440105

%N Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1010-1111-0101 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 .0.1.1.0.0.1.1.0

%e .1.1.0.0.0.0.1.1

%e .0.1.1.0.0.1.1.0

%e .1.1.0.0.0.0.1.1

%K nonn

%O 1,7

%A _R. H. Hardin_

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Last modified April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)