[1,1,3,12,38,124,430,1530,5378,18938,67042,238446, 849586,3033214,10851386,38895414,139634834, 502003486,1807104810,6512929766,23498319154, 84864219966,306764487338,1109807490550, 4018136484386,14558333191406]