A solution is offered in response to a complex combination problem challenged by Blom, Englund, and Sandell (1998). The problem is to determine the probability that a random permutation of the word BILLCLINTON has no equal neighbors.
"The President’s Problem,"
Journal of Modern Applied Statistical Methods: Vol. 3
, Article 18.
Available at: http://digitalcommons.wayne.edu/jmasm/vol3/iss2/18