OFFSET
2,2
REFERENCES
Lionel E. Deimel and Michael T. Jones: Finding Pluperfect Digital Invariants: Techniques, Results and Observations, Journal of Recreational Mathematics 14, 1981-82, pp. 87-107.
LINKS
Walter Schneider, Perfect Digital Invariants
Dik T. Winter, Table of Armstrong Numbers
CROSSREFS
KEYWORD
base,hard,more,nonn
AUTHOR
Robert G. Wilson v, Feb 28 2002
STATUS
approved