The normality conjecture for bases with four zeros in their Pisano period

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Let ω(β)\omega(\beta) denote the number of zeros in one Pisano period of β\beta, and let the Fibonacci concatenation be the infinite sequence formed by concatenating the Fibonacci numbers. For a nonnegative integer yy, consider the base 2yβ2^y\beta.

Normality conjecture for bases with four zeros. For every base β\beta with ω(β)=4\omega(\beta)=4 and every nonnegative integer yy, the Fibonacci concatenation is normal in base 2yβ2^y\beta.

The source presents this as a conjectural extension of the proved result for bases of the form 5x2y5^x2^y and supports it with computational and heuristic evidence; it remains open.

References

Primary source

Brennan Benfield and Michelle Manes, “The Fibonacci Sequence is Normal Base 10”, arXiv:2202.08986 (2022).

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