[1,1,3,2,3,6,3,4,6,10,4,6,7,10,15,5,8,9,11,15,21, 6,10,12,13,16,21,28,7,12,15,16,18,22,28,36,8,14, 18,20,21,24,29,36,45,9,16,21,24,25,27,31,37,45,55, 10,18,24,28,30,31,34,39,46,55,66,11,20,27]