“…In this section, we present a closed formula for the Horadam finite operator numbers , in terms of a tridiagonal determinant and, as special cases of this newly‐established closed formula for the Horadam finite operator numbers , obtain closed formula for the k ‐Fibonacci finite operator numbers , the Fibonacci finite operator numbers , the Pell finite operator numbers , the k ‐Lucas finite operator numbers , the Lucas finite operator numbers , the Pell‐Lucas finite operator numbers , the Jacobsthal finite operator numbers , the Jacobsthal‐Lucas finite operator numbers , respectively. In the existing literature on the subject, one can find a fairly large number of papers relating the tridiagonal and Hessenberg determinants with special numbers and polynomials to algebra and combinatorial number theory, (see, for example, previous studies 20–29 ).…”