77774: Near Repdigit 77..774

First few terms (base 10): \[[7^*4_9]_n=\{4,67,634,5737,51664,\ldots\}\]

First few terms (base 9): \[\{\text{4},\text{74},\text{774},\text{7774},\text{77774},\ldots\}\]

General Formula:\[[7^*4_9]_n={63\cdot9^{n}-31\over8}\]

Equivalent Patterns: (none)

Table

No table data.