A 7-adic recurrence congruence for generalized Frobenius partitions with parameter 6

From papers

For integers α>0\alpha>0, β{0,1,2,3}\beta\in\{0,1,2,3\}, and nn satisfying

β2612n(mod72α1),\beta^2-6\equiv 12n\pmod{7^{2\alpha-1}},

The recurrence congruence conjecture.

cψ6,β(49n+244β2)xαcψ6,β(n)(mod7α),c\psi_{6,\beta}(49n+24-4\beta^2)\equiv x_\alpha\,c\psi_{6,\beta}(n)\pmod{7^\alpha},

where xαx_\alpha is a constant depending on α\alpha. This predicts a family of 7-adic congruence relations among generalized Frobenius partition functions and is presented as another example of the congruence phenomenon discussed in the paper. Its resolution is not indicated in the supplied text.

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Primary source

Rong Chen and Xiao-Jie Zhu, “Correspondence among congruence families for generalized Frobenius partitions via modular permutations”, arXiv:2506.16823 (2026).

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