67666: Near Repdigit 6766..66

First few terms (base 10): \[[676^*_9]_n=\{61,555,5001,45015,405141,\ldots\}\]

First few terms (base 9): \[\{\text{67},\text{676},\text{6766},\text{67666},\text{676666},\ldots\}\]

General Formula:\[[676^*_9]_n={247\cdot9^{n}-3\over4}\]

Equivalent Patterns: (none)

Table

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