Journal of Integer Sequences, Vol. 23 (2020), Article 20.6.2 |
Chèfiath Awero Adegbindin
Institut de Mathématiques et de Sciences Physiques
Dangbo
Bénin
Alain Togbé
Department of Mathematics, Statistics, and Computer Science
Purdue University Northwest
1401 S., U.S. 421
Westville, IN 46391
USA
Abstract:
(Concerned with sequences A000931 A001608 A019434.)
Received October 19 2019; revised versions received May 5 2020; May 6 2020; June 3 2020. Published in Journal of Integer Sequences, June 9 2020.