22225: Near Repdigit 22..225

First few terms (base 10): \[[2^*5_9]_n=\{5,23,185,1643,14765,\ldots\}\]

First few terms (base 9): \[\{\text{5},\text{25},\text{225},\text{2225},\text{22225},\ldots\}\]

General Formula:\[[2^*5_9]_n={9\cdot9^{n}+11\over4}\]

Equivalent Patterns: \[[6^*76_9]_n=3\cdot[2^*5_9]_{n+1}\]

Table

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