44447: Near Repdigit 44..447

First few terms (base 10): \[[4^*7_8]_n=\{7,39,295,2343,18727,\ldots\}\]

First few terms (base 8): \[\{\text{7},\text{47},\text{447},\text{4447},\text{44447},\ldots\}\]

General Formula:\[[4^*7_8]_n={32\cdot8^{n}+17\over7}\]

Equivalent Patterns: \[[1^*6_8]_n=2\cdot[4^*7_8]_{n-1}\]

Table

No table data.