74777: Near Repdigit 7477..77

First few terms (base 10): \[[747^*_9]_n=\{67,610,5497,49480,445327,\ldots\}\]

First few terms (base 9): \[\{\text{74},\text{747},\text{7477},\text{74777},\text{747777},\ldots\}\]

General Formula:\[[747^*_9]_n={543\cdot9^{n}-7\over8}\]

Equivalent Patterns: (none)

Table

No table data.