[1,1,3,8,27,90,314,1100,4097,15379,58904,226907,
884995,3490548,13923584,55904938,225959563,
917849212,3749844940,15409605006,63632836257,
263813965837,1097573897750,4581668896724,
19194046607877,80679116225178,340094072595665,
1437257061661419,6088250441078777]
|