@article{Knuth04,
  title = {Problem 11078},
  author = {Donald E. Knuth},
  year = {2004},
  url = {http://www.jstor.org/stable/4145252},
  researchr = {https://researchr.org/publication/Knuth04},
  cites = {0},
  citedby = {0},
  journal = {The American Mathematical Monthly},
  volume = {111},
  number = {4},
  pages = {361},
}