On positive integers with a certain nondivisibility property.
On power series, Bell polynomials, Hardy-Ramanujan-Rademacher problem and its statistical applications
On powerful numbers.
On practical partitions.
On prime-detecting sequences from Apéry's recurrence formulae for and .
On products and interminate powers of sequences
On properties of systems of arithmetic sequences
On pseudoprimes having special forms and a solution of K. Szymiczek’s problem
We use the properties of -adic integrals and measures to obtain general congruences for Genocchi numbers and polynomials and tangent coefficients. These congruences are analogues of the usual Kummer congruences for Bernoulli numbers, generalize known congruences for Genocchi numbers, and provide new congruences systems for Genocchi polynomials and tangent coefficients.
On Pyramidal Numbers of Order 4.
On -Euler numbers related to the modified -Bernstein polynomials.
On q-Euler numbers, q-Salié numbers and q-Carlitz numbers
On rainbow arithmetic progressions.
On rapid generation of .
On ratio sets of natural numbers
On reciprocal sums of terms of linear recurrences
On recurrences of Fahr and Ringel arising in graph theory.
On recurrent mod p sequences.
On regular Frobenius bases.
On relations between -density and -density
In this paper it is discus a relation between -density and -density. A generalization of Šalát’s result concerning this relation in the case of asymptotic density is proved.
On relatively prime sets.