Every multiple of 4 except 212, 364, 420, and 428 is the sum of seven cubes

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/224774It is conjectured that every integer N>454 is the sum of seven nonnegative cubes. We prove the conjecture when N is a multiple of 4.8 pages; to appear in Bull. LMSNumber Theory11P05Every multiple of 4 except 212, 364, 420, and 428 is the sum of seven cubestext