Title of article :
On Hardy's Apology Numbers
Author/Authors :
Koppelaar, Henk Faculty of Electrical Engineering Mathematics and Computer Science - Delft University of Technology, Delft, The Netherlands , Nasehpour, Peyman Department of Engineering Science - Golpayegan University of Technology
Abstract :
Twelve well known `Recreational' numbers are generalized
and classied in three generalized types Hardy,
Dudeney, and Wells. A novel proof method to limit the
search for the numbers is exemplied for each of the
types. Combinatorial operators are dened to ease programming
the search.
Keywords :
Hardy's apology numbers , Armstrong numbers , Dudeney numbers , Wells numbers
Journal title :
Journal of Algorithms and Computation
