[0,1,2,2,3,3,3,4,4,4,5,6,6,7,7,7,8,9,9,10,11,11, 12,12,12,13,14,14,15,16,16,17,17,17,18,18,18,19, 20,20,21,21,21,22,23,23,24,25,25,26,26,26,27,27, 27,28,29,29,30,30,30,31,31,31,32,33,33,34,34,34, 35,36,36,37,38,38,39,39,39,40,40]