11131: Near Repdigit 11..1131

First few terms (base 10): \[[1^*31_5]_n=\{16,41,166,791,3916,\ldots\}\]

First few terms (base 5): \[\{\text{31},\text{131},\text{1131},\text{11131},\text{111131},\ldots\}\]

General Formula:\[[1^*31_5]_n={25\cdot5^{n}+39\over4}\]

Equivalent Patterns: (none)

Table

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