# A091549 (b-file synthesized from sequence entry) 2 1 3 28 4 960 5 43200 6 2520000 7 186278400 8 17069875200 9 1902071808000 10 253487646720000 11 39833773056000000 12 7291173820170240000 13 1538106259064094720000 14 370502654756909875200000