Polygonal, Sierpinski, and Riesel Numbers. - Daniel Baczkowski; Justin Eitner; Carrie E. Finch; Braedon Suminski; Mark Kozek (J. Integer Seq., 2015)

Polygonal-Sierpinski-Riesel Sequences with Terms Having at Least Two Distinct Prime Divisors. - Daniel Baczkowski; Justin Eitner (Integers, 2016)