30004: Quasi Repdigit 300..004

First few terms (base 10): \[[30^*4_9]_n=\{31,247,2191,19687,177151,\ldots\}\]

First few terms (base 9): \[\{\text{34},\text{304},\text{3004},\text{30004},\text{300004},\ldots\}\]

General Formula:\[[30^*4_9]_n=27\cdot9^{n}+4\]

Equivalent Patterns: \[[60^*8_9]_n=2\cdot[30^*4_9]_n\]

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