22522: Near Repdigit Palindrome 22..22522..22

First few terms (base 10): \[[2^*52^*_{10}]_n=\{5,252,22522,2225222,222252222,\ldots\}\]

General Formula:\[[2^*52^*_{10}]_n={20\cdot10^{2n}+27\cdot10^{n}-2\over9}\]

Equivalent Patterns: (none)

See Also: Factorization of 22..22522..22 on stdkmd.net

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