# A374661 (b-file synthesized from sequence entry) 0 1 1 5 2 35 3 280 4 3080 5 46200 6 1016400 7 33541200 8 1710601200 9 136848096000 10 17379708192000 11 3528080762976000 12 1150154328730176000 13 603831022583342400000 14 511444876128091012800000 15 699656590543228505510400000 16 1546940721691078225683494400000