# A272261 (b-file synthesized from sequence entry) 0 1 1 0 2 4 3 40 4 576 5 10528 6 233920 7 6124032 8 184656640 9 6302821888 10 240245858304 11 10115537336320 12 466275700903936 13 23354247194542080 14 1262994451308888064 15 73347095164693676032 16 4552571878016243466240 17 300763132329730843475968 18 21071629550593224017182720