[1,2,3,4,4,5,5,6,7,7,7,8,8,8,9,10,10,10,10,11,11,
 11,11,12,13,13,13,13,13,14,14,14,14,14,15,16,16,
 16,16,16,16,17,17,17,17,17,17,18,19,19,19,19,19,
 19,19,20,20,20,20,20,20,20,21,22,22,22,22,22,22,
 22]