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Search: id:A147145
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| A147145 |
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Number of n X n binary arrays symmetric under 90 degree rotation with all ones connected only in a 1000-1100-0110-0011 pattern in any orientation. |
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1
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| 1, 1, 1, 1, 1, 1, 1, 1, 13, 25, 51, 161, 489, 1381, 4593, 16307, 70385
(list; graph; listen)
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