Consecutive, Reversed, Mirror, and Symmetric Smarandache Sequences of Triangular Numbers

We use the Maple system to check the investigations of S. S. Gupta regarding the Smarandache consecutive and the reversed Smarandache sequences of triangular numbers [Smarandache Notions Journal, Vol. 14, 2004, pp. 366-368]. Furthermore, we extend previous investigations to the mirror and symmetric Smarandache sequences of triangular numbers.