[0,2,14,62,242,912,3418,12854,48602,184736,705410,
2704132,10400574,40116572,155117490,601080358,
2333606186,9075135264,35345263762,137846528780,
538257874398,2104098963676,8233430727554,
32247603683052,126410606437702,495918532948052,
1946939425648058]
|