OFFSET
1,1
COMMENTS
10 <= a(n) <= 99; a(a(n))=a(n).
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
EXAMPLE
a(12321)=31; a(3210123)=30; a(59387)=83; a(8923)=92.
MATHEMATICA
Table[FromDigits[{Max[x = IntegerDigits[n]], Min[x]}], {n, 69}] (* Jayanta Basu, Jul 08 2013 *)
PROG
CROSSREFS
KEYWORD
AUTHOR
Reinhard Zumkeller, Aug 05 2002
STATUS
approved