A Note on Matrices over ℤ With Entries Stemming from Binomial Coefficients and from Catalan Numbers once Pure and once Taken Modulo 2

The Pascal matrix, which is related to Pascal's triangle, appears in many places in the theory of uniform distribution and in many other areas of mathematics. Examples are the construction of low-discrepancy sequences as well as normal numbers or the binomial transforms of Hankel matrices. Hankel matrices which are defined by Catalan numbers and related to the paperfolding sequence are interesting objects in number theory. Therefore, matrices that share many properties with the Pascal matrix or such Hankel matrices are of interest. In this note we will collect common features of the Pascal matrix and the same modulo 2 as well as the Hankel matrix defined by Catalan numbers once pure and once modulo 2 in the ring of integers. Hankel matrices with only 0 and 1 entries in e.g., finite fields gave recently access to counterexamples to the so-called X-adic Liouville conjecture. This justifies as well as motivates our consideration of further matrices with 0 and 1 entries.