66616: Near Repdigit 66..6616

First few terms (base 10): \[[6^*16_9]_n=\{15,501,4875,44241,398535,\ldots\}\]

First few terms (base 9): \[\{\text{16},\text{616},\text{6616},\text{66616},\text{666616},\ldots\}\]

General Formula:\[[6^*16_9]_n=3\cdot{81\cdot9^{n}-61\over4}\]

Equivalent Patterns: (none)

Table

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