[2,12,40,144,550,1896,7584,27328,105348,398760, 1538696,5872800,22646862,87492676,339055650, 1313842904,5104724558,19873572892,77470783406, 302258087616,1180840902336,4618922848536, 18083348822516,70852652846320]