# A131281 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 2
4 6
5 18
6 70
7 310
8 1582
9 9058
10 57678
11 403878
12 3085478
13 25535378
14 227589206
15 2173314806
16 22137209694
17 239580726978
18 2745392996254
19 33207657441094
20 422813028038230
21 5652593799727858
22 79168165551184422
23 1159200449070638742
24 17711278225214739086