# A138648 (b-file synthesized from sequence entry)
0 0
1 2
2 24
3 93
4 526
5 1182
6 8274
7 42293
8 296051
9 1291107
10 9037749
11 24201743
12 169412201
13 453463532
14 732838474
15 17336900568
16 121358303976
17 696920237207
18 3352562754199
19 12023847482518
20 65093446049501
21 169551827424632
22 2140537108378674
23 10215388176619468