[1,2,2,3,3,4,4,5,5,7,7,7,7,8,8,9,9,11,11,11,11,13, 13,13,13,16,16,16,16,16,16,17,17,19,19,19,19,23, 23,23,23,23,23,23,23,25,25,25,25,27,27,27,27,29, 29,29,29,31,31,31,31,32,32,37,37,37,37,37,37]