OFFSET
1,1
COMMENTS
For any n>0, a(n) is finite (or zero) and a(0) is infinite (because there are an infinite number of palindromes).
EXAMPLE
a(7)=2 because there are only two integers m such that (digit reversal of m) - m = 9*7=63, namely 18 and 29: 81-18=63 and 92-29=63.
MATHEMATICA
A104347=Table[Select[Range[0, 40000], (FromDigits[Reverse[IntegerDigits[ # ]]]-#)/9==k&]//Length, {k, 100}]
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Zak Seidov, Mar 02 2005
STATUS
approved