[1,2,2,3,4,4,5,5,5,6,6,7,8,8,9,9,9,10,10,10,10,11, 11,11,12,12,13,13,13,14,14,15,16,16,17,17,17,18, 18,18,18,19,19,19,20,20,20,20,21,21,21,21,21,22, 22,22,22,23,23,23,24,24,25,25,25,26,26,26,26]