[1,1,3,3,5,5,7,7,9,9,11,11,13,13,15,15,17,17,19, 19,21,21,23,23,25,25,27,27,29,29,31,31,33,33,35, 35,37,37,39,39,41,41,43,43,45,45,47,47,49,49,51, 51,53,53,55,55,57,57,59,59,61,61,63,63,65,65,67, 67,69,69,71,71,73]