81115: Quasi Repdigit 811..115

First few terms (base 10): \[[81^*5_9]_n=\{77,662,5927,53312,479777,\ldots\}\]

First few terms (base 9): \[\{\text{85},\text{815},\text{8115},\text{81115},\text{811115},\ldots\}\]

General Formula:\[[81^*5_9]_n={585\cdot9^{n}+31\over8}\]

Equivalent Patterns: (none)

Table

No table data.