Math sets and sequences iceberg
Just a small iceberg of math sets and sequences. Sometimes i will update it and add more entries. the more complex the set or the sequence is - the deeper it will be in the iceberg

ℕ (natural numbers)
primesSB
whole numbers
even numbers
odd numbers
ℤ (integers)
square numbers/perfect squares
ℚ (rational numbers)
powers of 2SB
arithmetic sequence
geometric sequence
Fibonacci sequence
tribonacci sequence, tetranacci sequence...
Lucas sequence
triangular numbersSB
semiprimes
palindromic numbers
Fibonacci primes
pi decimal expansion
Mersenne primes
Sophie Germain primes
twin primes
algebraic numbers
ℂ (complex numbers)
ℝ (real numbers)
lucky numbers
perfect numbers
circular primes
Sylvester's sequenceSB
divisor function and divisor numbers
evil numbers
tau numbers
self numbers
Harshad numbers
partition function and partition numbers
motzkin numbersSB
Bell numbers
Kolakoski sequence