# Sequences

Video

Four videos on various mathematical sequences.

**Sequence of prime numbers in ascending order.
First 999 objects.**

Picture: **Mikołaj Pasiński**

Sound: **Marcin Polak**

**First 300 numbers from the Fibonacci Sequence.**

F(n) = F(n-1) + F(n-2)

Picture: **Mikołaj Pasiński**

Sound/field recording: **Marcin Polak**

Sounds recorded in الإسكندرية in 2015

**The Ehrenfeucht-Mycielski sequence**

The Ehrenfeucht-Mycielski sequence is a maximally unpredictable sequence. The sequence starts with {1, 2, 1} and continues according to the following rule: find the longest sequence at the end that has occurred at least once previously. If there are more than one previous occurrences select the last one. The next digit of the sequence is the opposite of the one following the previous occurrence. [https://oeis.org/A007061]

Picture: **Mikołaj Pasiński**

Sound recorded by **Marcin Polak** in الإسكندرية in 2015

**Per Nørgård’s infinity sequence (1792 terms)**

Formula: a(2n) = -a(n) a(2n+1) = a(n) + 1 a(0) = 0

Picture: **Mikołaj Pasiński**

Midi generated with a script written by David Applegate [https://oeis.org/play].