[1,1,2,8,42,260,1860,15020,134336,1313696,
13911528,158279872,1922455440,24794405328,
338037825952,4853075024192,73123573392416,
1152965052858560,18974557508679104,
325181733420301504,5791431588096653824,
106990656473333558528,2046805540661737323136]
|