# A034875 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 12
5 25
6 85
7 194
8 590
9 1695
10 4879
11 19077
12 83994
13 167988
14 1041780
15 2448645
16 9677725
17 33250403
18 117499773
19 811972692
20 1762911460