55655: Near Repdigit Palindrome 55..55655..55

First few terms (base 10): \[[5^*65^*_8]_n=\{6,373,23469,1498477,95873901,\ldots\}\]

First few terms (base 8): \[\{\text{6},\text{565},\text{55655},\text{5556555},\text{555565555},\ldots\}\]

General Formula:\[[5^*65^*_8]_n={40\cdot8^{2n}+7\cdot8^{n}-5\over7}\]

Equivalent Patterns: (none)

Table

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