**Ars Combinatoria****Volume CXXXII, April, 2017**

**Qi Wang, Feixing Gao and Xianglin Wei**, “The number of boundary H-points of H-triangles”, pp. 3-9**Roberto B. Corcino, Richell O. Celeste and Ken Joffaniel M. Gonzales**, “Rook Theoretic Proofs Of Some Identities Related To Spivey’s Bell Number Formula”, pp. 11-26**G. Sethuraman and P. Ragukumar**, “Every Tree is a subtree of Graceful Tree, Graceful Graph and Alpha-labeled Graph”, pp. 27-47**Guang-Jun Zhang, Dameng Deng and Jie Zhang**, “The majorization theorem and signless Dirichlet spectral radius of connected graphs”, pp. 49-58**Masaya Tomie**, “NBB bases of some lattices of pattern avoiding permutations”, pp. 59-67**Renying Chang and Yan Zhu**, “Toughness and [a,b]-factors with prescribed properties”, pp. 69-80**Wuyungaowa**, “Riordan arrays and hyperharmonic numbers”, pp. 81-91**Adel T. Diab and S. Nada**, “Some results on specific graphs”, pp. 93-103**Zhishang Zhang, Qingcheng Zhang and Chunyue Wang**, “On (a,b;n)-graceful labeling of path Pn”, pp. 105-119**Guixin Deng**, “Proof of a conjecture on intersection graph of finite abelian groups”, pp. 121-125**Petros A. Petrosyan**, “On Interval Edge-Colorings of Outerplanr Graphs”, pp. 127-135**Le Anh Vinh**, “On 3-term arithmetic progressions in product sets over finite rings via spectra of graphs”, pp. 137-145**Gwang Yeon Lee and Mustafa Asci**, “On The Generalized Gaussian Fibonacci Numbers”, pp. 147-157**P. Titus and P. Balakrishnan**, “The upper vertex detour monophonic number of a graph”, pp. 159-169**Renfang Wu and Hanyuan Deng**, “A stronger relation between coloring number and the modification of Randic index”, pp. 171-181**Weihua Yang, Wei-Hua He, Hao Li and Xingchao Deng**, “Supereulerian graphs and Chvatal-Erdos type conditions”, pp. 183-192**Shi-Chao Chen**, “Periodicity of A Partition Function Related to Making Change Modulo Prime Powers”, pp. 193-201**Zengtai Gong and Qian Wang**, “Some Operations on Fuzzy Hypergraphs”, pp. 203-217**S.V. Ullas Chandran and A.P. Santhakumaran**, “On the monophonic sets of the strong product graphs”, pp. 219-229**Quan-Hui Yang and Min Tang**, “Density of integral sets with missing differences”, pp. 231-239**Wenjie Ning, Mei Lu and Jia Guo**, “Locating and differentiating-total dominating sets in unicyclic graphs”, pp. 241-255**Jinxi Li and Lihua You**, “The (distance) signless Laplacian spectral radii of digraphs with given dichromatic number”, pp. 257-267**Michael Arockiaraj, L. Packiaraj and R. Sundara Rajan**, “Exact Wirelength of Circulant Networks into Cycle-of-ladders”, pp. 269-283**Zheng-Jiang Xia, Yong-Liang Pan, Jun-Ming Xu and Xi-Ming Cheng**, “Graham’s pebbling conjecture on the middle graphs of even cycles”, pp. 285-294**Xinying Pai and Sanyang Liu**, “On the signless Laplacian spectral radius of tricyclic graphs with n vertices and diameter d”, pp. 295-309**Qin Chen**, “The Adjacent Vertex Distinguishing Total Chromatic Number of Some Families of Snarks”, pp. 311-321**Mark Shattuck**, “Recounting the number of peaks and valleys in compositions of integers”, pp. 323-329**Bao-Xuan Zhu**, “On the Laplacian Estrada index of graphs with given chromatic number”, pp. 331-338**Dengju Ma and Han Ren**, “The orientable genus of the generalized Petersen graph P(km,m)”, pp. 339-3556**Pengli Lu and Yumo Wu**, “Laplacian and signless Laplacian characteristic polynomial of generalized subdivision corona vertex graph “, pp. 357-369**Maryam Mirzakhah and Dariush Kiani**, “Some Posets Of Unicyclic Graphs Based On Signless Laplacian Coefficients”, pp. 371-388**Mustafa Asci and Esref Gurel**, “Gaussian Fibonacci And Gaussian Lucas p-Numbers”, pp. 389-402**Gang Ma, Shengjin Ji, Qiuju Bian and Xia Li**, “The minimum matching energy of tricyclic graphs and given girth and without K_{4}-subdivision”, pp. 403-419