%I
%S 1,1,1,1,1,2,3,5,8,17,40,108,294,944,3040,12114,49757,243775,1210271,
%T 7153531,43484383,316861269,2366046579,21108349931,192219307524,
%U 2092034177623,23326966046445,311290850669433,4251413939111348
%N Number of n X n binary arrays symmetric about both diagonal and antidiagonal with all ones connected only either four adjacent vertically or four adjacent horizontally.
%K nonn
%O 1,6
%A _R. H. Hardin_, Oct 19 2008
