Akbulak, M.Oteles, A.2024-12-242024-12-2420141735-8515https://hdl.handle.net/20.500.12604/8092In 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.eninfo:eu-repo/semantics/closedAccessPermanentPell sequenceHessenberg matrixArticle40410171025Q4WOS:000341704600015