Similar to 中心つき八面体数

Weird number

Deficient number

Twin prime

Practical number

Blum integer

Friedman number

Brocard's problem

Proth number

Partition function (number theory)

Square-free integer

Heegner number

Perrin number

Bell number

Pell number

Bernoulli number

Markov number

Mian–Chowla sequence

Mersenne number

Motzkin number

Divisor

Amicable numbers

Good prime

Prime quadruplet