11411: Near Repdigit Palindrome 11..11411..11

First few terms (base 10): \[[1^*41^*_5]_n=\{4,46,856,19906,490156,\ldots\}\]

First few terms (base 5): \[\{\text{4},\text{141},\text{11411},\text{1114111},\text{111141111},\ldots\}\]

General Formula:\[[1^*41^*_5]_n={5\cdot5^{2n}+12\cdot5^{n}-1\over4}\]

Equivalent Patterns: (none)

Table

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