17775: Quasi Repdigit 177..775

First few terms (base 10): \[[17^*5_9]_n=\{14,149,1364,12299,110714,\ldots\}\]

First few terms (base 9): \[\{\text{15},\text{175},\text{1775},\text{17775},\text{177775},\ldots\}\]

General Formula:\[[17^*5_9]_n={135\cdot9^{n}-23\over8}\]

Equivalent Patterns: \[[36^*1_9]_n=2\cdot[17^*5_9]_n\]

Table

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