[0,0,1,2,15,82,402,2352,22113,220504,2329650, 26780256,293266680,3505934160,45390355920, 633293015040,10873520709273,195823830637744, 3698406245739330,73192513664010816, 1509611621730135000,32576548307761013760, 734272503865161846480]