Burstein, Alexander A short proof for the number of permutations containing pattern 321 exactly once. (English) Zbl 1229.05006 Electron. J. Comb. 18, No. 2, Research Paper P21, 3 p. (2011). Reviewer: William G. Brown (Montréal) MSC: 05A05 05A15 PDFBibTeX XMLCite \textit{A. Burstein}, Electron. J. Comb. 18, No. 2, Research Paper P21, 3 p. (2011; Zbl 1229.05006) Full Text: EMIS
Mansour, T.; Vainshtein, A. Restricted permutations and Chebyshev polynomials. (English) Zbl 1022.05005 Sémin. Lothar. Comb. 47, 17 p. (2002). MSC: 05A15 05A05 30B70 42C05 PDFBibTeX XMLCite \textit{T. Mansour} and \textit{A. Vainshtein}, Sémin. Lothar. Comb. 47, 17 p. (2002; Zbl 1022.05005) Full Text: arXiv EuDML