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113 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) The number of associative binary operations on an 3-set, or the number of labeled semigroups with 3 elements. [Post]
Submitted: 2009-01-04 14:15:59; Last Modified: 2009-01-07 06:08:58.
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