12223: Quasi Repdigit 122..223

First few terms (base 10): \[[12^*3_4]_n=\{7,27,107,427,1707,\ldots\}\]

First few terms (base 4): \[\{\text{13},\text{123},\text{1223},\text{12223},\text{122223},\ldots\}\]

General Formula:\[[12^*3_4]_n={20\cdot4^{n}+1\over3}\]

Equivalent Patterns: \[[31^*2_4]_n=2\cdot[12^*3_4]_n\]

Table

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