12224: Quasi Repdigit 122..224

First few terms (base 10): \[[12^*4_7]_n=\{11,67,459,3203,22411,\ldots\}\]

First few terms (base 7): \[\{\text{14},\text{124},\text{1224},\text{12224},\text{122224},\ldots\}\]

General Formula:\[[12^*4_7]_n={28\cdot7^{n}+5\over3}\]

Equivalent Patterns: \[[40^*5_7]_n=3\cdot[12^*4_7]_n\]

Table

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