# A207818 (b-file synthesized from sequence entry)
1 1
2 3
3 15
4 105
5 981
6 11775
7 174309
8 3070293
9 62728749
10 1462046235
11 38446605975
12 1131448219263
13 37011386961477
14 1337106744965847
15 53005310776229283
16 2290750722850361415
17 107258522028595441911
18 5410293190992424617243
19 292567014870308385871989