Haanpää, Harri; Östergård, Patric R. J. Sets in Abelian groups with distinct sums of pairs. (English) Zbl 1111.20044 J. Number Theory 123, No. 1, 144-153 (2007). MSC: 20K01 11B13 05B40 05B10 PDFBibTeX XMLCite \textit{H. Haanpää} and \textit{P. R. J. Östergård}, J. Number Theory 123, No. 1, 144--153 (2007; Zbl 1111.20044) Full Text: DOI
Deutsch, Emeric; Sagan, Bruce E. Congruences for Catalan and Motzkin numbers and related sequences. (English) Zbl 1163.11310 J. Number Theory 117, No. 1, 191-215 (2006). MSC: 11B65 11B83 PDFBibTeX XMLCite \textit{E. Deutsch} and \textit{B. E. Sagan}, J. Number Theory 117, No. 1, 191--215 (2006; Zbl 1163.11310) Full Text: DOI arXiv