25554: Quasi Repdigit 255..554

First few terms (base 10): \[[25^*4_7]_n=\{18,137,970,6801,47618,\ldots\}\]

First few terms (base 7): \[\{\text{24},\text{254},\text{2554},\text{25554},\text{255554},\ldots\}\]

General Formula:\[[25^*4_7]_n={119\cdot7^{n}-11\over6}\]

Equivalent Patterns: \[[54^*1_7]_n=2\cdot[25^*4_7]_n\]

Table

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