67777: Near Repdigit 677..77

First few terms (base 10): \[[67^*_9]_n=\{6,61,556,5011,45106,\ldots\}\]

First few terms (base 9): \[\{\text{6},\text{67},\text{677},\text{6777},\text{67777},\ldots\}\]

General Formula:\[[67^*_9]_n={55\cdot9^{n}-7\over8}\]

Equivalent Patterns: (none)

Table

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