@article {MR1988646,
	title = {Further results on derived sequences},
	journal = {J. Integer Seq.},
	volume = {6},
	number = {2},
	year = {2003},
	pages = {Article 03.2.7, 7},
	issn = {1530-7638},
	url = {https://cs.uwaterloo.ca/journals/JIS/VOL6/Hare/hare3.pdf},
	author = {Hare, Kevin G. and Yazdani, Soroosh}
}
