On the integers of the form $p^2+b^2+2^n$ and $b_1^2+b

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/231068We prove that the sumset {p^2+b^2+2^n: p is prime and b,n\in N} has positive lower density. We also construct a residue class with odd modulo, which contains no integer of the form p^2+b^2+2^n. And similar results are established for the sumset {b_1^2+b_2^2+2^{n^2}: b_1,b_2,n\in N}.17 pagesNumber Theory11P32; 11A07; 11B05; 11B25; 11N36On the integers of the form $p^2+b^2+2^n$ and $b_1^2+b_2^2+2^{n^2}$text