The number of orthogonal Latin squares
The number of prime factors of binomial coefficients
The number of ternary words avoiding abelian cubes grows exponentially.
The number of triangles formed by intersecting diagonals of a regular polygon.
The Number-System of Algebra [Book]
The number-theoretic content of the Jacobi triple product identity.
The Order of Points on the Second Convex Hull of a Simple Polygon.
The -adic valuations of sequences counting alternating sign matrices.
The packing density of other layered permutations.
The Parity of Permutations.
The partially ordered set of all J-classes of a finite semigroup.
The permutation classes equinumerous to the smooth class.
The Pfaffian transform.
The polynomial part of a restricted partition function related to the Frobenius problem.
The power of a prime that divides a generalized binomial coefficient.
The problem of kings.
The problem of the kings.
The Pythagorean Approach to Problems of Periodicity in Chemistry and Nuclear Physics
The -binomial theorem and two symmetric -identities.
The -Bell numbers.