About: http://webisa.webdatacommons.org/218856871

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	This problem is a cousin of a similar problem in combinatorics: How many ways can we arrange P unique pigeons in a line?
http://www.w3.org/ns/prov#wasQuotedFrom	everything2.com