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Parity Collapse of Run-Refined Even-Zero-Run Words to a Single Binomial Coefficient

Version 1 (Latest)
October 01, 2026 19:21
Parity Collapse of Run-Refined Even-Zero-Run Words to a Single Binomial Coefficient
We study binary words in which every run of zeros has even length, refined by length and number of runs. Let $R(n,r)$ denote the number of words of length $n$ …
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