ABCDEFGHIJKLMNOPQRSTUVWXYZ Definition of Number Pattern more ... A list of numbers that follow a certain sequence or pattern. Example: 1, 4, 7, 10, 13, 16, ... starts at 1 and jumps 3 every time. Another Example: 2, 4, 8, 16, 32, ... doubles each time Number Sequences - Square, Cube and Fibonacci