[0,1,2,2,3,4,5,5,6,7,8,8,9,10,11,11,12,13,14,14, 15,16,16,17,18,19,19,20,21,22,22,23,24,25,25,26, 27,28,28,29,30,30,31,32,33,33,34,35,36,36,37,38, 39,39,40,41,41,42,43,44,44,45,46,47,47,48,49,50]