22322: Near Repdigit Palindrome 22..22322..22

First few terms (base 10): \[[2^*32^*_7]_n=\{3,121,5651,274857,13453603,\ldots\}\]

First few terms (base 7): \[\{\text{3},\text{232},\text{22322},\text{2223222},\text{222232222},\ldots\}\]

General Formula:\[[2^*32^*_7]_n={7\cdot7^{2n}+3\cdot7^{n}-1\over3}\]

Equivalent Patterns: \[[4^*64^*_7]_n=2\cdot[2^*32^*_7]_n\]

Table

No table data.