The book is now available! 251429
(another Prime Pages' Curiosity)
Prime Curios!
Curios: Curios Search:
 

Participate:
Share
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 01:29:09;   Last Modified: 2010-03-03 10:12:45.



Prime Curios! © 2000-2017 (all rights reserved)