# A358014 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 0 4 24 5 60 6 120 7 210 8 40656 9 363384 10 2117520 11 9980190 12 520250280 13 9496208436 14 109522054824 15 982593614730 16 28426015541280 17 762523155318000 18 14192088961120416 19 204618562767970614 20 4906638448867994040 21 154037798077765359660 22 4000484484370905087480