# A362738 (b-file synthesized from sequence entry)
2 0
3 0
4 192
5 3000
6 46440
7 823200
8 16776704
9 387419760
10 9999999000
11 285311669280
12 8916100446528
13 302875106590056
14 11112006825555272
15 437893890380856000
16 18446744073709547520
17 827240261886336759264
18 39346408075296537569592
19 1978419655660313589117120
20 104857599999999999999992000