An example of a series is the Fibonacci numbers. Each number in the sequence is the sum of the last two numbers. For example, in the following sequence ...
1 1 2 3 5 8 13 21 ...... 2 is the sum of 1 and 1, 3 is the sum of 2 and 1, 5 is the sum of 3 and 2, etc. This is known as the Fibonacci series, after the Fibonacci brothers (famous Mathematicians, if you have an open-minded definition of the word "famous").
Here's another series that we've just had confirmed yesterday:
1 3 4 5 6 7 8 9 10These are the Amendments in the Bill of Rights, as proposed by the ACLU (a civil liberties group, if you have an open-minded definition of the term "civil liberty"):
Number Series Contest!
"he [sic] Court was careful to note that the right to bear arms is not absolute and can be subject to reasonable regulation. Yet, by concluding that D.C.'s gun control law was unreasonable and thus invalid, the Court placed a constitutional limit on gun control legislation that had not existed prior to its decision in Heller. It is too early to know how much of a constitutional straitjacket the new rule will create."