68887: Quasi Repdigit 688..887

First few terms (base 10): \[[68^*7_9]_n=\{61,565,5101,45925,413341,\ldots\}\]

First few terms (base 9): \[\{\text{67},\text{687},\text{6887},\text{68887},\text{688887},\ldots\}\]

General Formula:\[[68^*7_9]_n=63\cdot9^{n}-2\]

Equivalent Patterns: (none)

Table

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