%0 Journal Article %A Sreelatha Chandragiri %T Counting lattice paths by using difference equations with non-constant coefficients %J The Bulletin of Irkutsk State University. Series Mathematics %D 2023 %P 55-70 %V 44 %I mathdoc %U http://geodesic.mathdoc.fr/item/IIGUM_2023_44_a4/ %G en %F IIGUM_2023_44_a4