# A116772 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 21
5 76
6 278
7 1021
8 3756
9 13827
10 50916
11 187512
12 690593
13 2543444
14 9367525
15 34500756
16 127067006
17 467990629
18 1723620240
19 6348133335
20 23380322908
21 86110274536
22 317146150489
23 1168056674504
24 4301979997337
25 15844292751908