Similar to スターリング数

Sieve theory

Brun sieve

Partition function (number theory)

Bell polynomials

Inclusion–exclusion principle

Pólya enumeration theorem

Generating function

Rising factorial

Matroid

Möbius function

Motzkin number

Young tableau

Finite geometry

Josephus problem

Latin square

Ramanujan's congruences

Alignments of random points

Rogers–Ramanujan identities

Einstein's constant

Anscombe's quartet

Anderson–Darling test

Anne's theorem

Egan conjecture