From: utzoo!decvax!harpo!zeppo!whuxlb!eric Newsgroups: net.followup Title: Re: Number theory problem Article-I.D.: whuxlb.349 Posted: Sun Jul 18 10:49:59 1982 Received: Mon Jul 19 00:49:09 1982 References: whuxlb.348 actually, i don`t know how to prove that if f(n)== if odd n=3n+1 if even n=n/2 BUT, i do know that once you reach 1, it repeats this sequece forever 1,2,4,1,2,4,1,2,4. hurray for brute force computer programmers, like myself. please- no flames about that anymore Eric Holtman