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