# A026684 (b-file synthesized from sequence entry)
2 1
3 11
4 50
5 352
6 1412
7 9012
8 35218
9 216556
10 841161
11 5080487
12 19727183
13 117977884
14 458783666
15 2727417052
16 10627866041
17 62938875136
18 245774605829
19 1451708319833
20 5680430498730
21 33491080099092
22 131295252750566
23 773074959646212