55355: Near Repdigit Palindrome 55..55355..55

First few terms (base 10): \[[5^*35^*_8]_n=\{3,349,23277,1496941,95861613,\ldots\}\]

First few terms (base 8): \[\{\text{3},\text{535},\text{55355},\text{5553555},\text{555535555},\ldots\}\]

General Formula:\[[5^*35^*_8]_n={40\cdot8^{2n}-14\cdot8^{n}-5\over7}\]

Equivalent Patterns: (none)

Table

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