48889: Quasi Repdigit 488..889

First few terms (base 10): \[[48^*9_{10}]_n=\{49,489,4889,48889,488889,\ldots\}\]

General Formula:\[[48^*9_{10}]_n={440\cdot10^{n}+1\over9}\]

Equivalent Patterns: \[[97^*8_{10}]_n=2\cdot[48^*9_{10}]_n\] \[[12^*5_{10}]_n=25\cdot[48^*9_{10}]_{n-2}\] \[[24^*5_{10}]_n=5\cdot[48^*9_{10}]_{n-1}\] \[[73^*5_{10}]_n=15\cdot[48^*9_{10}]_{n-1}\]

See Also: Factorization of 488..889 on stdkmd.net

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