2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/77590We present a variation and generalization of a determinant evaluation of Wilf (math.CO/9809120). His result concerns a matrix whose entries are the coefficients of powers of a given power series; we replace the powers by repeated compositions and obtain similar results.3 pages, AMSLaTeX source (replaced 18 May 1998: corrected some typos, added a reference provided by Herb Wilf)CombinatoricsRings and Algebras05A19; 15A15text