18888: Near Repdigit 188..88

First few terms (base 10): \[[18^*_{10}]_n=\{1,18,188,1888,18888,\ldots\}\]

General Formula:\[[18^*_{10}]_n={17\cdot10^{n}-8\over9}\]

Equivalent Patterns: \[[94^*_{10}]_n=[18^*_{10}]_{n+1}/2\] \[[56^*4_{10}]_n=3\cdot[18^*_{10}]_{n+1}\] \[[37^*6_{10}]_n=2\cdot[18^*_{10}]_{n+1}\] \[[75^*2_{10}]_n=4\cdot[18^*_{10}]_{n+1}\]

See Also: Factorization of 188..88 on stdkmd.net

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