# A359335 (b-file synthesized from sequence entry)
0 1
1 3
2 14
3 84
4 360
5 2160
6 10080
7 60480
8 249984
9 1499904
10 6999552
11 41997312
12 179988480
13 1079930880
14 5039677440
15 30238064640
16 122903101440
17 737418608640
18 3441286840320
19 20647721041920
20 88490233036800
21 530941398220800
22 2477726525030400
23 14866359150182400