[1,2,3,3,4,5,5,5,6,7,7,7,7,8,9,9,9,9,9,10,11,11, 11,11,11,11,12,13,13,13,13,13,13,13,14,15,15,15, 15,15,15,15,15,16,17,17,17,17,17,17,17,17,17,18, 19,19,19,19,19]