# A058090 (b-file synthesized from sequence entry)
7 2
8 48
9 504
10 6000
11 73260
12 951984
13 13152984
14 193295952
15 3016469790
16 49879061920
17 871884630672
18 16072938332064
19 311769325656312
20 6349343550308640
21 135485465497382160
22 3023380765038115680
23 70429101211136913498
24 1709801309366361996624