About: http://webisa.webdatacommons.org/189150250

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	Prove that 1*1! + 2*2! + ? + n*n! = (n+1)! ? 1 whenever n is a positive integer.I know I should use induction to prove this... but how?
http://www.w3.org/ns/prov#wasQuotedFrom	mathforum.org