# A345887 (b-file synthesized from sequence entry)
1 1
2 6
3 30
4 164
5 1030
6 7422
7 60620
8 554248
9 5611770
10 62353010
11 754471432
12 9876716940
13 139097096918
14 2097156230470
15 33704296561140
16 575219994643472
17 10389911153247730
18 198019483156015578
19 3971390745517868000
20 83608226221428800020
21 1843561388182505040462