28885: Quasi Repdigit 288..885

First few terms (base 10): \[[28^*5_9]_n=\{23,239,2183,19679,177143,\ldots\}\]

First few terms (base 9): \[\{\text{25},\text{285},\text{2885},\text{28885},\text{288885},\ldots\}\]

General Formula:\[[28^*5_9]_n=27\cdot9^{n}-4\]

Equivalent Patterns: \[[58^*1_9]_n=2\cdot[28^*5_9]_n\]

Table

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