44144: Near Repdigit Palindrome 44..44144..44

First few terms (base 10): \[[4^*14^*_5]_n=\{1,109,3049,77749,1951249,\ldots\}\]

First few terms (base 5): \[\{\text{1},\text{414},\text{44144},\text{4441444},\text{444414444},\ldots\}\]

General Formula:\[[4^*14^*_5]_n=5\cdot5^{2n}-3\cdot5^{n}-1\]

Equivalent Patterns: (none)

Table

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