Estrada, E.; Pogliani, L. A New Integer Sequence Based on the Sum of the Digits of Integers. Kragujevac Journal of Sciences 30, 2008, 45-50.

Estrada, E.; Pogliani, L. A New Integer Sequence Based on the Sum of the Digits of Integers. Kragujevac Journal of Sciences 30, 2008, 45-50. [PDF]