Akbulak, MehmetÖteleş, Ahmet2024-12-242024-12-2420141018-6301https://hdl.handle.net/20.500.12604/3881In this paper, we define two n-square upper Hessenberg matrices one of which corresponds to the adjacency matrix of a directed pseudo graph. We investigate relations between permanents and determinants of these upper Hessenberg matrices, and sum formulas of the well-known Pell and Jacobsthal sequences. Finally, we present two Maple 13 procedures in order to calculate permanents of these upper Hessenberg matrices. © 2014 Iranian Mathematical Society.eninfo:eu-repo/semantics/closedAccessHessenberg matrixPell sequencePermanentArticle40410171025Q22-s2.0-84907374038