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 A146852 Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1100-1111-0001 pattern in any orientation. 0
 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 5, 17, 17, 37, 37, 137, 137, 741, 741 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,13 LINKS EXAMPLE Maximal 13 X 13 example .0.0.0.1.1.0.0.0.1.1.0.0.0 .0.0.0.1.1.0.0.0.1.1.0.0.0 .0.0.0.0.1.0.0.0.1.0.0.0.0 .1.1.0.0.1.1.0.1.1.0.0.1.1 .1.1.1.1.0.0.0.0.0.1.1.1.1 .0.0.0.1.0.0.0.0.0.1.0.0.0 .0.0.0.0.0.0.0.0.0.0.0.0.0 .0.0.0.1.0.0.0.0.0.1.0.0.0 .1.1.1.1.0.0.0.0.0.1.1.1.1 .1.1.0.0.1.1.0.1.1.0.0.1.1 .0.0.0.0.1.0.0.0.1.0.0.0.0 .0.0.0.1.1.0.0.0.1.1.0.0.0 .0.0.0.1.1.0.0.0.1.1.0.0.0 CROSSREFS Sequence in context: A075684 A146876 A147206 * A146237 A282501 A147167 Adjacent sequences: A146849 A146850 A146851 * A146853 A146854 A146855 KEYWORD nonn AUTHOR R. H. Hardin, Nov 04 2008 STATUS approved

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Last modified January 30 10:34 EST 2023. Contains 359943 sequences. (Running on oeis4.)