[1,6,27,135,648,3159,15309,74358,360855,1751787, 8503056,41275251,200353257,972537030,4720790403, 22915204479,111232727064,539935021503, 2620899608085,12722114017782,61754438526111, 299762341738371,1455076971950112,7063091991495675]