55515: Near Repdigit 55..5515

First few terms (base 10): \[[5^*15_6]_n=\{11,191,1271,7751,46631,\ldots\}\]

First few terms (base 6): \[\{\text{15},\text{515},\text{5515},\text{55515},\text{555515},\ldots\}\]

General Formula:\[[5^*15_6]_n=36\cdot6^{n}-25\]

Equivalent Patterns: (none)

Table

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