[0,1,1,1,6,21,86,371,1647,7438,34266,159927, 755533,3604684,17347231,84103279,410421861, 2014380304,9937355972,49247272198,245062080990, 1223998706732,6134070857861,30835493057217, 155444304401138,785636444084278,3980190985058791]