On the Integers of the Form
نویسندگان
چکیده
We prove that the sumset {p2+b2+2n : p is prime and b, n ∈ N} has positive lower density. We also construct a residue class with an odd modulus that contains no integer of the form p2 + b2 + 2n. Similar results are established for the sumset {b1 + b2 + 2n 2 : b1, b2, n ∈ N}.
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