55255: Near Repdigit Palindrome 55..55255..55

First few terms (base 10): \[[5^*25^*_8]_n=\{2,341,23213,1496429,95857517,\ldots\}\]

First few terms (base 8): \[\{\text{2},\text{525},\text{55255},\text{5552555},\text{555525555},\ldots\}\]

General Formula:\[[5^*25^*_8]_n={40\cdot8^{2n}-21\cdot8^{n}-5\over7}\]

Equivalent Patterns: (none)

Table

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