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