Adele, the 33-year-old British top-selling and award-winning recording artist, released her sensational new album, 30, in November. In fact, Adele’s album titles are always numbers, and they reflect the age that she wrote them. She wrote her debut album 19 at 19, followed by 21, then 25, and now, 30 Adele recently turned 33 but she started writing the album at 30. The chronological list of Adele’s album titles 19, 21, 25 and 30 was coined the “Adele sequence” by David Patrick, senior math and science curriculum director at the Art of Problem Solving. The Adele sequence is there in the middle: 19, 21, 25, 30 and suggests her next album will be 31.