You might try to locate a copy of Lure of the Integers by Joe Roberts. It's an MAA publication from 1992, almost certainly out of print by now. However a used copy may appear somewhere on the web (Amazon? Alibris?) - ISBN 0-88385-502-X.
Good luck locating it, it's worth a search, Tom R. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
