77677: Near Repdigit Palindrome 77..77677..77

First few terms (base 10): \[[7^*67^*_8]_n=\{6,503,32703,2096639,134213631,\ldots\}\]

First few terms (base 8): \[\{\text{6},\text{767},\text{77677},\text{7776777},\text{777767777},\ldots\}\]

General Formula:\[[7^*67^*_8]_n=8\cdot8^{2n}-8^{n}-1\]

Equivalent Patterns: (none)

Table

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