h(k,i) = (h(k) + *c*_{1}i + *c*_{2} *i*^{2}) mod m

- Only certain combination of
*c*_{1},*c*_{2}, and m use the entire hash table. - h(
*k*_{1},0) = h(*k*_{2},0) implies h(*k*_{1},i) = h(*k*_{2},i). This leads to secondary clustering. - There are only m (<<
*m*!) distinct probe sequences.

**In this example, the probe sequence is
**