[0,1,3,3,7,7,7,7,15,15,15,15,15,15,15,15,31,31,31, 31,31,31,31,31,31,31,31,31,31,31,31,31,63,63,63, 63,63,63,63,63,63,63,63,63,63,63,63,63,63,63,63, 63,63,63,63,63,63,63,63,63,63,63]