Similar to 六角錐数

Solinas prime

Refactorable number

Taxicab number

Powerful number

Centered nonagonal number

Centered pentagonal number

Centered triangular number

Centered square number

Centered polygonal number

Centered heptagonal number

Centered octagonal number

Centered hexagonal number

Central binomial coefficient

Superabundant number

Superperfect number

Harmonic divisor number

Dedekind number

Heptagonal number

Lazy caterer's sequence

Narcissistic number

Binomial coefficient

Double factorial

Double Mersenne number

Dihedral prime

Nontotient

Harshad number