Parity bias conjecture for missing integers in partitions

Let P(n,m)P(n,m) denote the number of partitions of nn with mm missing integers. Define

Me(n)=∑k=0⌊n−12⌋P(n,2k),Mo(n)=∑k=1⌊n2⌋P(n,2k−1).\mathcal{M}_e(n)=\sum_{k=0}^{\lfloor \frac{n-1}{2} \rfloor}P(n,2k),\qquad \mathcal{M}_o(n)=\sum_{k=1}^{\lfloor \frac{n}{2} \rfloor}P(n,2k-1).

Thus, Me(n)\mathcal{M}_e(n) and Mo(n)\mathcal{M}_o(n) count partitions of nn with an even and odd number of missing integers, respectively. Parity bias conjecture. For n>34n>34,

Me(n)>Mo(n).\mathcal{M}_e(n)>\mathcal{M}_o(n).

This conjectures that, beyond the observed threshold, partitions with an even number of missing integers outnumber those with an odd number. The source presents this as an analogue of a known parity bias for partitions and gives no proof or resolution.

References

Primary source

Subhash Chand Bhoria, Pramod Eyyunni and Subhrangsu Santra, “On the number of missing integers in partitions”, arXiv:2604.12557 (2026).

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