Question 1040618
Identify and formalize the pattern of each sequence.  Some of those sequences seem difficult.


Example, this one:
60,41,31,53,43,56,60,59,57,61


minus 19;
minus 10;
plus 22;
minus 10;
plus 13;
plus 4;
minus 1;
minus 2;
plus 3.


That appears to be no pattern, so no next number can be predicted.