# A026631 (b-file synthesized from sequence entry)
2 1
3 7
4 30
5 119
6 467
7 1820
8 7076
9 27493
10 106848
11 415538
12 1617504
13 6302416
14 24581249
15 95968478
16 375029576
17 1466881997
18 5742440324
19 22498218218
20 88212326756
21 346114729562
22 1358944775654
23 5338963361408
24 20987909276600