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