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 A147226 Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 11011-01110 pattern in any orientation. 0
 1, 1, 1, 1, 1, 3, 10, 29, 94, 321, 1262, 7231, 51504, 415403, 3863371, 41121252, 505066528, 7638140887, 140942068334, 3073652987530, 79190388734899, 2405781069528047 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,6 LINKS EXAMPLE Maximal 8 X 8 example .0.1.1.0.1.1.0.0 .1.0.1.1.1.0.0.0 .1.1.0.0.0.0.0.1 .0.1.0.0.0.0.1.1 .1.1.0.0.0.0.1.0 .1.0.0.0.0.0.1.1 .0.0.0.1.1.1.0.1 .0.0.1.1.0.1.1.0 CROSSREFS Sequence in context: A307062 A052976 A147363 * A301879 A147062 A293155 Adjacent sequences: A147223 A147224 A147225 * A147227 A147228 A147229 KEYWORD nonn AUTHOR R. H. Hardin, Nov 04 2008 STATUS approved

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Last modified December 9 15:12 EST 2022. Contains 358700 sequences. (Running on oeis4.)