[0,0,0,1,2,1,3,3,3,4,5,4,6,6,6,7,8,7,9,9,9,10,11, 10,12,12,12,13,14,13,15,15,15,16,17,16,18,18,18, 19,20,19,21,21,21,22,23,22,24,24,24,25,26,25,27, 27,27,28,29,28,30,30,30,31,32,31,33,33,33,34,35, 34,36,36,36,37]