[1,1,1,1,2,4,12,34,120,412,1608,6244,26288,111448,
499256,2265288,10701896,51339768,254175048,
1278947304,6604214760,34662182904,186002333640,
1014140252376,5638617162312,31837193871480,
182962292354376,1067120997002680,6325487157903240,
38030207563538680]
|