Andri LOPEZ. An Application of the Algorithm (3a+1) in the Problem of Computing O\((2^n)\). Current Topics on Mathematics and Computer Science Vol. 2, [S. l.], p. 109–112, 2021. DOI: 10.9734/bpi/ctmcs/v2/9637D. Disponível em: https://stm.bookpi.org/CTMCS-V2/article/view/1782. Acesso em: 2 jul. 2026.