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