An infinite sequence.
Fibonacci sequence
Fibonacci sequence
Fibonacci
875
An infinite sequence.
Fibonacci sequence
Fibonacci sequence
Fibonacci sequence
Fibonacci
10,341
875
The term for an involuntary reaction to an external stimulus is a reflex.
The sequence you provided is a "look-and-say" sequence. Each term describes the previous term by counting consecutive digits. The last term, 111221, can be described as "three 1s, two 2s, and one 1," which translates to the next term: 312211.
Ascending terms in the sequence are equal to 12, 32, 52, __, 92, and, for some reason, 102, not 112. Therefore, assuming the last term in the sequence to be 112 = 121, the fourth term in the sequence is 72 = 49.
The 9th term of the Fibonacci Sequence is 34Fibonacci Sequence up to the 15th term:1123581321345589144233377610
6