# A246657 (b-file synthesized from sequence entry)
0 0
1 1
2 3
3 7
4 24
5 87
6 332
7 1320
8 5407
9 22672
10 96844
11 419910
12 1843386
13 8176962
14 36594388
15 165026353
16 749170529
17 3420949803
18 15702232962
19 72407225094
20 335276107549
21 1558289108596
22 7267201176311
23 33996105203757
24 159484982985619
25 750134031377432