Akbulak M.Öteleş A.2024-04-242024-04-2420141018-6301https://hdl.handle.net/11468/25087In 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 SequencePermanentOn the sum of pell and jacobsthal numbers by matrix methodOn the sum of pell and jacobsthal numbers by matrix methodArticle404101710252-s2.0-84907374038Q2