22212: Near Repdigit 22..2212

First few terms (base 10): \[[2^*12_7]_n=\{9,107,793,5595,39209,\ldots\}\]

First few terms (base 7): \[\{\text{12},\text{212},\text{2212},\text{22212},\text{222212},\ldots\}\]

General Formula:\[[2^*12_7]_n={49\cdot7^{n}-22\over3}\]

Equivalent Patterns: \[[6^*36_7]_n=3\cdot[2^*12_7]_n\] \[[4^*24_7]_n=2\cdot[2^*12_7]_n\]

Table

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