[0,0,0,1,2,3,4,4,6,5,8,6,10,7,12,8,14,9,16,10,18, 11,20,12,22,13,24,14,26,15,28,16,30,17,32,18,34, 19,36,20,38,21,40,22,42,23,44,24,46,25,48,26,50, 27,52,28,54,29,56,30,58,31,60,32,62,33,64,34,66, 35,68,36]