12224: Quasi Repdigit 122..224

First few terms (base 10): \[[12^*4_9]_n=\{13,103,913,8203,73813,\ldots\}\]

First few terms (base 9): \[\{\text{14},\text{124},\text{1224},\text{12224},\text{122224},\ldots\}\]

General Formula:\[[12^*4_9]_n={45\cdot9^{n}+7\over4}\]

Equivalent Patterns: \[[24^*8_9]_n=2\cdot[12^*4_9]_n\] \[[50^*7_9]_n=4\cdot[12^*4_9]_n\]

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