251429
This number is a prime.
Single Curio View: (Seek other curios for this number)
Four of the first 5 values are primes, up through this one, of
partial sums of number of inequivalent ways of choosing n
squares from an n-by-n board, considering rotations and
reflections to be the same. After these (3, 19, 271,
251429) there are no more through 20-by-20. [Post]
Submitted: 2010-03-03 07:29:09; Last Modified: 2010-03-03 16:12:45.
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