2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/6011374 new integer sequences are introduced in number theory, and for each of them is given a characterization, followed by open problems. each one a general question: how many primes each sequence has.84 pages, may tables of numbers. Presented to the Pedagogical High School Student Conference in Craiova, 1972. "Collected Papers", Vol. II, book by Florentin Smarandache, University of Kishinev Press, Kishinev, 200 p., 1997General Mathematics11A67text