55855: Near Repdigit Palindrome 55..55855..55

First few terms (base 10): \[[5^*85^*_9]_n=\{8,482,37148,2991542,242157488,\ldots\}\]

First few terms (base 9): \[\{\text{8},\text{585},\text{55855},\text{5558555},\text{555585555},\ldots\}\]

General Formula:\[[5^*85^*_9]_n={45\cdot9^{2n}+24\cdot9^{n}-5\over8}\]

Equivalent Patterns: (none)

Table

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