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