- Identify a sequence (or get the next term of it)
- Wikipedia
- Create a random sequence

An integer sequence can be

*explicit*or*implicit*.**Explicit**: a formula is used to create the next term, for example 2n+8. The number after 5 would be 18 (2x5+8).

**Implicit**: a relationship between the terms give the next term. For example: adding the two last terms to give the next.

**certain properties**that other numbers don't. For example Prime numbers, which are only divisible by 1 and themself.

Examples of sequences (from Wikipedia)

- Abundant numbers
- Baum–Sweet sequence
- Bell numbers
- Binomial coefficients
- Carmichael numbers
- Catalan numbers
- Composite numbers
- Deficient numbers
- Euler numbers
- Even and odd numbers
- Factorial numbers
- Fibonacci numbers
- Fibonacci word
- Figurate numbers
- Golomb sequence
- Happy numbers
- Highly totient numbers
- Highly composite numbers
- Home primes
- Hyperperfect numbers
- Juggler sequence
- Kolakoski sequence
- Lucky numbers
- Lucas numbers
- Padovan numbers
- Partition numbers
- Perfect numbers
- Pseudoperfect numbers
- Prime numbers
- Pseudoprime numbers
- Regular paperfolding sequence
- Rudin–Shapiro sequence
- Semiperfect numbers
- Semiprime numbers
- Superperfect numbers
- Thue-Morse sequence
- Ulam numbers
- Weird numbers