75555: Near Repdigit 755..55

First few terms (base 10): \[[75^*_9]_n=\{7,68,617,5558,50027,\ldots\}\]

First few terms (base 9): \[\{\text{7},\text{75},\text{755},\text{7555},\text{75555},\ldots\}\]

General Formula:\[[75^*_9]_n={61\cdot9^{n}-5\over8}\]

Equivalent Patterns: (none)

Table

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