# A333005 (b-file synthesized from sequence entry) 1 1 2 6 3 135 4 5052 5 264270 6 17765100 7 1459311840 8 141655066560 9 15864853936680 10 2013630348265200 11 285637924882787400 12 44782566595855149600 13 7689608275439667376800 14 1435181273959520911824000 15 289287240571642427530416000 16 62630090604946453360419648000