# A075212 (b-file synthesized from sequence entry)
1 1
2 1
3 3
4 7
5 21
6 75
7 257
8 930
9 3104
10 9265
11 21304
12 81392
13 139612
14 427454
15 1176912
16 2491134
17 4319362
18 16243200
19 21965930
20 76738851
21 158374741