[1,2,19,252,3885,65274,1159587,21421248,407337153, 7920326700,156753610013,3147328992080, 63951322669065,1312575792628356,27172514322677625, 566707337222428800,11896007334177739113, 251142622845893276190,5328891499524964282170]