33331: Near Repdigit 33..331

First few terms (base 10): \[[3^*1_4]_n=\{1,13,61,253,1021,\ldots\}\]

First few terms (base 4): \[\{\text{1},\text{31},\text{331},\text{3331},\text{33331},\ldots\}\]

General Formula:\[[3^*1_4]_n=4\cdot4^{n}-3\]

Equivalent Patterns: (none)

Table

No table data.