# A301511 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 14
4 68
5 362
6 2224
7 14940
8 110348
9 878600
10 7518002
11 68529122
12 662709832
13 6764329158
14 72622813172
15 817239648500
16 9612724174088
17 117878757097178
18 1503660164683864
19 19911519090176808
20 273221610513382028
21 3878513600608651636
22 56873187579428449852
23 860296560100458300892