icystrike Messages 444 Reaction score 1 Thread starter Mar 17, 2011 #1 Can someone explain to me what is this sequence referred in the page? http://oeis.org/A004730" Last edited by a moderator: May 5, 2017
tiny-tim Science Advisor Homework Helper Messages 25,837 Reaction score 258 Mar 17, 2011 #2 do you mean what is n! ? see http://en.wikipedia.org/wiki/Double_factorial#Double_factorial" Last edited by a moderator: Apr 25, 2017