Problem 10981. - Nicholas Singer (Am. Math. Mon., 2002)

Eigenvalues of a Bidiagonal Matrix: 10958. - Robin Chapman; Nicholas Singer (Am. Math. Mon., 2004)

A Divisibility Property of a Recurrence: 10981. - Nicholas Singer (Am. Math. Mon., 2004)

The Stationary Distribution of a Tridiagonal Row-Stochastic Matrix: 11032. - Mark Pinsky 001; Nicholas Singer (Am. Math. Mon., 2005)

Perfect Powers in an Arithmetic Progression: 11182. - Shahin Amrahov; Nicholas Singer (Am. Math. Mon., 2007)

A Vanishing Alternating Sum: 11212/11220. - David Beckwith; Harris Kwong; Rob Pratt; Nicholas Singer (Am. Math. Mon., 2008)