[0,1,1,3,3,3,5,5,5,7,7,7,7,7,7,9,9,9,11,11,11,11, 11,11,12,12,12,14,14,14,14,14,14,15,15,15,16,16, 16,16,16,16,16,16,16,18,18,18,19,19,19,19,19,19, 20,20,20,20,20,20,22,22,22,23,23,23,23,23,23,25, 25,25,25,25,25]