20005: Quasi Repdigit 200..005

First few terms (base 10): \[[20^*5_9]_n=\{23,167,1463,13127,118103,\ldots\}\]

First few terms (base 9): \[\{\text{25},\text{205},\text{2005},\text{20005},\text{200005},\ldots\}\]

General Formula:\[[20^*5_9]_n=18\cdot9^{n}+5\]

Equivalent Patterns: (none)

Table

No table data.