26667: Quasi Repdigit 266..667

First few terms (base 10): \[[26^*7_9]_n=\{25,223,2005,18043,162385,\ldots\}\]

First few terms (base 9): \[\{\text{27},\text{267},\text{2667},\text{26667},\text{266667},\ldots\}\]

General Formula:\[[26^*7_9]_n={99\cdot9^{n}+1\over4}\]

Equivalent Patterns: \[[54^*5_9]_n=2\cdot[26^*7_9]_n\] \[[82^*3_9]_n=3\cdot[26^*7_9]_n\]

Table

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