17111: Near Repdigit 1711..11

First few terms (base 10): \[[171^*_9]_n=\{16,145,1306,11755,105796,\ldots\}\]

First few terms (base 9): \[\{\text{17},\text{171},\text{1711},\text{17111},\text{171111},\ldots\}\]

General Formula:\[[171^*_9]_n={129\cdot9^{n}-1\over8}\]

Equivalent Patterns: \[[53^*_9]_n=3\cdot[171^*_9]_{n-1}\]

Table

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