38888: Near Repdigit 388..88

First few terms (base 10): \[[38^*_9]_n=\{3,35,323,2915,26243,\ldots\}\]

First few terms (base 9): \[\{\text{3},\text{38},\text{388},\text{3888},\text{38888},\ldots\}\]

General Formula:\[[38^*_9]_n=4\cdot9^{n}-1\]

Equivalent Patterns: \[[78^*7_9]_n=2\cdot[38^*_9]_{n+1}\]

Table

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