12111: Near Repdigit 1211..11

First few terms (base 10): \[[121^*_8]_n=\{10,81,649,5193,41545,\ldots\}\]

First few terms (base 8): \[\{\text{12},\text{121},\text{1211},\text{12111},\text{121111},\ldots\}\]

General Formula:\[[121^*_8]_n={71\cdot8^{n}-1\over7}\]

Equivalent Patterns: \[[363^*_8]_n=3\cdot[121^*_8]_n\] \[[242^*_8]_n=2\cdot[121^*_8]_n\]

Table

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