The primary pretenders John H. Conway; Richard K. Guy; W. A. Schneeberger; N. J. A. Sloane — 1997 Acta Arithmetica
Numerical analogues of Aronson's sequence. Cloitre, Benoit; Sloane, N. J. A.; Vandermast, Matthew J. — 2003 Journal of Integer Sequences [electronic only]