51111: Near Repdigit 511..11

First few terms (base 10): \[[51^*_9]_n=\{5,46,415,3736,33625,\ldots\}\]

First few terms (base 9): \[\{\text{5},\text{51},\text{511},\text{5111},\text{51111},\ldots\}\]

General Formula:\[[51^*_9]_n={41\cdot9^{n}-1\over8}\]

Equivalent Patterns: (none)

Table

No table data.