Similar to Prime_k-tuple

Pandigital number

Beatty sequence

Hilbert number

Factorion

Fibonacci number

Fibonacci word

Fermat number

Weird number

Deficient number

Practical number

Blum integer

Friedman number

Brocard's problem

Partition function (number theory)

Square-free integer

Square triangular number

Square number

Heegner number

Perrin number

Bell number

Pell number

Bernoulli number

Markov number

Mian–Chowla sequence

Divisor

Amicable numbers