[0,3,14,45,124,315,762,1785,4088,9207,20470,45045, 98292,212979,458738,983025,2097136,4456431, 9437166,19922925,41943020,88080363,184549354, 385875945,805306344,1677721575,3489660902, 7247757285,15032385508]