On a duality formula for certain sums of values of poly-Bernoulli   polynomials and its application
  We prove a duality formula for certain sums of values of poly-Bernoulli polynomials which generalizes dualities for poly-Bernoulli numbers. We first compute two types of generating functions for these sums, from which the duality formula is apparent. Secondly we give an analytic proof of the duality from the viewpoint of our previous study of zeta-functions of Arakawa-Kaneko type. As an application, we give a formula that relates poly-Bernoulli numbers to the Genocchi numbers. 
Masanobu Kaneko, Fumi Sakurai, and Hirofumi Tsumura
math.NT