The Fibonacci series starts with 1, 1, 2, 3, 5, 8, ... Each number is the sum of the previous two numbers. You can easily continue adding (you might put a formula in Excel, and copy it), but you quickly reach very, very large numbers - long before the 10,000th. term.
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1, 1 and 2
Leonardo Fibonacci first recorded his sequence in his book Liber Abaci, which was published in 1202.
1, 1, 2, 3, 5, 8
If the first two numbers are 0, 1 or -1 (not both zero) then you get an alternating Fibonacci sequence.
The sequence 112358132124 is a variation of the Fibonacci sequence, where each number is the sum of the two preceding ones. It starts with 1, 1, 2, 3, 5, 8, 13, 21, and 34. In this case, the sequence is presented as a concatenated string of its first 12 Fibonacci numbers. Thus, it represents the digits of the Fibonacci numbers lined up together.