In mathematics, the look-and-say sequence is the sequence of integers beginning as follows:
1, 11, 21, 1211, 111221, 312211, 13112221, 1113213211, ... (sequence A005150 in OEIS). To generate a member of the sequence from the previous member, read off the digits of the previous member, counting the number of digits in groups of the same digit. For example:
The look-and-say sequence was introduced and analyzed by John Conway.
So, starting from a seed and a length, the output is a nx1 cell array of strings containing the Conway's sequence.