Greetings,
My goal is to return a geometric sequence of integers: the values are initially consistent, but go erratic about 50 steps into the sequence; the function returns a negative value, -59 in the case of mod 111, then repeats zero.
How might I resolve this issue?

1. int modVal = 1;
2. int mod = 111;
3. int comRatio = 2;
4. 
   
5. void draw() {
6.   int modSeq = geoSeq();
7.   println(modSeq);
8. }
9. 
   
10. int geoSeq() {
11.    int result = modVal%mod;
12.    modVal = (modVal*comRatio);
13.    delay(500);
14.    return result;
15. }