[0,1,2,1,4,3,4,3,6,3,6,3,8,5,8,5,6,5,6,7,8,7,10,7, 8,7,12,7,12,7,12,7,12,7,14,9,14,9,14,9,14,9,14,9, 14,11,16,11,14,11,16,11,18,11,16,11,16,11,16,11, 20,13,16,13,18,13,16,13,18,13,18,13,18]