20005: Quasi Repdigit 200..005

First few terms (base 10): \[[20^*5_7]_n=\{19,103,691,4807,33619,\ldots\}\]

First few terms (base 7): \[\{\text{25},\text{205},\text{2005},\text{20005},\text{200005},\ldots\}\]

General Formula:\[[20^*5_7]_n=14\cdot7^{n}+5\]

Equivalent Patterns: (none)

Table

No table data.