14447: Quasi Repdigit 144..447

First few terms (base 10): \[[14^*7_8]_n=\{15,103,807,6439,51495,\ldots\}\]

First few terms (base 8): \[\{\text{17},\text{147},\text{1447},\text{14447},\text{144447},\ldots\}\]

General Formula:\[[14^*7_8]_n={88\cdot8^{n}+17\over7}\]

Equivalent Patterns: \[[31^*6_8]_n=2\cdot[14^*7_8]_n\]

Table

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