My Erdös Number is three:

Daniel R. Kunkle -> Peter G. Anderson

P. Anderson, J. Arney, S. Inverso, D. Kunkle, T. Lebo, and C. Merrigan. "A Genetic Algorithm Search for Improved Halftone Masks". Proceedings of Artificial Neural Networks in Engineering (ANNIE '03), St. Louis, November 2003.

Peter G. Anderson -> Thomas C. Brown

P. Anderson, T. Brown, and P. Shiue. "A Simple Proof of a Remarkable Continued Fraction Identity." Proc. Amer. Math. Soc. 123, 2005-2009, 1995.

Thomas C. Brown -> Paul Erdos

T. Brown, P. Erdos, F. Chung, and R. Grahm. "Quantitative Forms of a Theorem of Hilbert." Journal of Combinatorial Theory, Series A 38, 210-216, 1985.