1
11
21
1211
111221
312211
1311221
1113213211
31131211131221
13211311123113112211

What would be the next sequence of numbers? my name is sharon i work in customer service and a friend asked me to solve this.

thank you.

Hi Shqaron,

This sequence is a 'humorous' one I first heard from the mathematician John Conway. The key to the solution is to 'read' one number (counting the consecutive occurances of any digit, from left to right).

First line: one one
Second line: two one(s)
Third line: one two one one ....

Walter Whiteley

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