SequenceCount

SequenceCount[list, sub] gives a count of the number of times sub appears as a sublist of list.

SequenceCount[list, patt] gives the number of sublists in list that match the general sequence pattern patt.

Examples

Count occurrences of a sublist:

SequenceCount[{a, b, a, b, c, a, b}, {a, b}]
(* 3 *)

Count pattern matches:

SequenceCount[{1, 2, 3, 4, 5}, {x_, y_} /; y > x]
(* 4 *)

Please visit the official Wolfram Language Reference for more details.