66665: Near Repdigit 66..665

First few terms (base 10): \[[6^*5_8]_n=\{5,53,437,3509,28085,\ldots\}\]

First few terms (base 8): \[\{\text{5},\text{65},\text{665},\text{6665},\text{66665},\ldots\}\]

General Formula:\[[6^*5_8]_n={48\cdot8^{n}-13\over7}\]

Equivalent Patterns: \[[15^*2_8]_n=2\cdot[6^*5_8]_n\]

Table

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