This number is a prime.
Single Curio View: (Seek other curios for this number)The number of distinct heptiamonds (i.e., triangular polyominoes with 7 cells), counted with reflections but not turning over. [Beedassy]
Submitted: 2008-11-05 06:41:44; Last Modified: 2008-11-05 17:16:30.
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