77477: Near Repdigit Palindrome 77..77477..77

First few terms (base 10): \[[7^*47^*_8]_n=\{4,487,32575,2095615,134205439,\ldots\}\]

First few terms (base 8): \[\{\text{4},\text{747},\text{77477},\text{7774777},\text{777747777},\ldots\}\]

General Formula:\[[7^*47^*_8]_n=8\cdot8^{2n}-3\cdot8^{n}-1\]

Equivalent Patterns: (none)

Table

No table data.