87775: Quasi Repdigit 877..775

First few terms (base 10): \[[87^*5_9]_n=\{77,716,6467,58226,524057,\ldots\}\]

First few terms (base 9): \[\{\text{85},\text{875},\text{8775},\text{87775},\text{877775},\ldots\}\]

General Formula:\[[87^*5_9]_n={639\cdot9^{n}-23\over8}\]

Equivalent Patterns: (none)

Table

No table data.