Derivatives of tangent function and tangent numbers

Feng Qi. Derivatives of tangent function and tangent numbers. Applied Mathematics and Computation, 268:844-858, 2015. [doi]

@article{Qi15,
  title = {Derivatives of tangent function and tangent numbers},
  author = {Feng Qi},
  year = {2015},
  doi = {10.1016/j.amc.2015.06.123},
  url = {http://dx.doi.org/10.1016/j.amc.2015.06.123},
  researchr = {https://researchr.org/publication/Qi15},
  cites = {0},
  citedby = {0},
  journal = {Applied Mathematics and Computation},
  volume = {268},
  pages = {844-858},
}