20003: Quasi Repdigit 200..003

First few terms (base 10): \[[20^*3_7]_n=\{17,101,689,4805,33617,\ldots\}\]

First few terms (base 7): \[\{\text{23},\text{203},\text{2003},\text{20003},\text{200003},\ldots\}\]

General Formula:\[[20^*3_7]_n=14\cdot7^{n}+3\]

Equivalent Patterns: \[[40^*6_7]_n=2\cdot[20^*3_7]_n\]

Table

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