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Search: id:A032069
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| A032069 |
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Number of reversible strings with n labeled beads of 2 colors, no palindromes of more than 1 bead. |
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1
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| 2, 2, 12, 144, 1440, 20160, 282240, 4838400, 87091200, 1799884800, 39597465600, 965667225600, 25107347865600, 708585150873600, 21257554526208000, 682919861944320000, 23219275306106880000
(list; graph; listen)
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