[0,2,2,6,10,24,40,92,164,408,704,1674,3036,7002, 12688,29040,53034,119502,219152,487924,900686, 1984664,3683632,8039958,15012858,32477788, 60988590,130889590,247193588,526601802,999873640, 2115798292]