For a natural number $m$, generalized $m$-gonal numbers are those numbers of the form $p_m(x)=\frac{(m-2)x^2-(m-4)x}{2}$ with $x\in \mathbb Z$. In this paper we establish conditions on $m$ for which the ternary sum $p_m(x)+p_m(y)+p_m(z)$ is almost universal.
Almost Universal Weighted Ternary Sums of Polygonal Numbers
Sums of four polygonal numbers with coefficients
On universal sums of polygonal numbers
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