22212: Near Repdigit 22..2212

First few terms (base 10): \[[2^*12_5]_n=\{7,57,307,1557,7807,\ldots\}\]

First few terms (base 5): \[\{\text{12},\text{212},\text{2212},\text{22212},\text{222212},\ldots\}\]

General Formula:\[[2^*12_5]_n={25\cdot5^{n}-11\over2}\]

Equivalent Patterns: \[[4^*24_5]_n=2\cdot[2^*12_5]_n\]

Table

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