55558: Near Repdigit 55..558

First few terms (base 10): \[[5^*8_9]_n=\{8,53,458,4103,36908,\ldots\}\]

First few terms (base 9): \[\{\text{8},\text{58},\text{558},\text{5558},\text{55558},\ldots\}\]

General Formula:\[[5^*8_9]_n={45\cdot9^{n}+19\over8}\]

Equivalent Patterns: \[[12^*7_9]_n=2\cdot[5^*8_9]_n\]

Table

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