48887: Quasi Repdigit 488..887

First few terms (base 10): \[[48^*7_{10}]_n=\{47,487,4887,48887,488887,\ldots\}\]

General Formula:\[[48^*7_{10}]_n={440\cdot10^{n}-17\over9}\]

Equivalent Patterns: \[[97^*4_{10}]_n=2\cdot[48^*7_{10}]_n\]

See Also: Factorization of 488..887 on stdkmd.net

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