[0,3,8,21,64,183,528,1529,4416,12763,36888,106605, 308096,890415,2573344,7437105,21493632,62117747, 179523624,518832901,1499454912,4333505127, 12524062256,36195211689,104606103232,302317249227, 873713066040]