The r-central factorial numbers with even indices

In this paper, we introduce the $r$-central factorial numbers with even indices of the first and second kind, as extended versions of the central factorial numbers with even indices of both kinds. We obtain several fundamental properties and identities related to these numbers. We show that the unsigned $r$-central factorial numbers with even indices of the first kind are strictly log-concave and Poisson-binomially distributed . Finally, we consider the $r$-central factorial matrices and the factorization of it.