# A163929 (b-file synthesized from sequence entry) 1 1 2 1 3 16 4 1296 5 20736 6 12960000 7 4320000 8 10372320000 9 165957120000 10 40327580160000 11 40327580160000 12 590436101122560000 13 590436101122560000 14 16863445484161436160000 15 2409063640594490880000 16 2409063640594490880000