27778: Quasi Repdigit 277..778

First few terms (base 10): \[[27^*8_9]_n=\{26,233,2096,18863,169766,\ldots\}\]

First few terms (base 9): \[\{\text{28},\text{278},\text{2778},\text{27778},\text{277778},\ldots\}\]

General Formula:\[[27^*8_9]_n={207\cdot9^{n}+1\over8}\]

Equivalent Patterns: \[[56^*7_9]_n=2\cdot[27^*8_9]_n\] \[[85^*6_9]_n=3\cdot[27^*8_9]_n\]

Table

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