[1,1,2,2,3,2,3,3,4,2,4,3,4,3,4,3,5,4,5,5,5,4,5,5,5,4,5,4,5,5,5,6,6,5,6,5,6,5,6,5,6,6,6,7,6,6,6,7,6,7,6,7,6,8,6,8,6,7,6,8,6,8,6,8,7,8,7,9,7,9,7,10,7,10,7,10,7,10,7,11]