21222: Near Repdigit 2122..22

First few terms (base 10): \[[212^*_8]_n=\{17,138,1106,8850,70802,\ldots\}\]

First few terms (base 8): \[\{\text{21},\text{212},\text{2122},\text{21222},\text{212222},\ldots\}\]

General Formula:\[[212^*_8]_n={121\cdot8^{n}-2\over7}\]

Equivalent Patterns: \[[424^*_8]_n=2\cdot[212^*_8]_n\] \[[636^*_8]_n=3\cdot[212^*_8]_n\]

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