On 6/11/2014 8:14 PM, Frank Adams-Watters wrote: > Are 2, 3, 5, 9 the only numbers such that n^3 - n is a factorial? > > Should this sequence be added? Cf. A061030 - A061032. IMO if it is proved that those are the only such numbers the info should just be added to these seqs. -- Eric Schmidt