33433: Near Repdigit Palindrome 33..33433..33

First few terms (base 10): \[[3^*43^*_7]_n=\{4,178,8452,412114,20179204,\ldots\}\]

First few terms (base 7): \[\{\text{4},\text{343},\text{33433},\text{3334333},\text{333343333},\ldots\}\]

General Formula:\[[3^*43^*_7]_n={7\cdot7^{2n}+2\cdot7^{n}-1\over2}\]

Equivalent Patterns: (none)

Table

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