Less than or equal to two. I have papers with both Neil & EP -- so does John Conway, and probably many others. R. On Sat, 18 Mar 2006, Alonso Del Arte wrote: > Just wondering: What is Neil Sloane's Erd?s number? What are thepapers to make the connection? And would this mean that those who helpNeil edit sequences have an Erd?s number E(NJAS) + 1? > Alonso >