OFFSET
1,1
EXAMPLE
For n=2:
m = 89, m^2 = 7921 and 21 has no digit in common with 89 so it is counted.
m = 91, m^2 = 8281 and 81 has digit 1 in common with 91 so it is not counted.
m = 1, m^2 = 1 has digit 1 in common so it is not counted.
For n=3:
m = 962, m^2 = 925444 and 444 has no digit in common with 962 so it is counted.
m = 963, m^2 = 927369 and 369 has all digits in common with 963 so it is not counted.
CROSSREFS
KEYWORD
base,nonn,more
AUTHOR
Lars Blomberg, Apr 09 2015
STATUS
approved