[1,1,2,2,3,4,5,6,8,26,81,243,693,1887,4932,12418, 30288,72026,167989,541500,1635975,4662579, 12580587,32228307,78662108,183988734,415466897, 912816164,1965020012,6121555788,17573354640, 46896718806]