21112: Depression 211..112

First few terms (base 10): \[[21^*2_7]_n=\{16,107,744,5203,36416,\ldots\}\]

First few terms (base 7): \[\{\text{22},\text{212},\text{2112},\text{21112},\text{211112},\ldots\}\]

General Formula:\[[21^*2_7]_n={91\cdot7^{n}+5\over6}\]

Equivalent Patterns: \[[42^*4_7]_n=2\cdot[21^*2_7]_n\] \[[63^*6_7]_n=3\cdot[21^*2_7]_n\]

Table

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