[2,7,22,69,212,644,1936,5772,17088,50288,147232, 429136,1245888,3604544,10396160,29900992,85784064, 245548800,701402624,1999734016,5691409408, 16172221440,45885403136,130011401216,367902195712, 1039836672000,2935713865728,8279592292352]