# A372015 (b-file synthesized from sequence entry)
0 0
1 1
2 4
3 15
4 50
5 160
6 494
7 1491
8 4420
9 12925
10 37380
11 107136
12 304764
13 861445
14 2421700
15 6775755
16 18879734
17 52413856
18 145038890
19 400183575
20 1101277060
21 3023462521
22 8282790024
23 22646131200
24 61805595000
25 168399404425
26 458128878724
27 1244567262471
28 3376576740410
29 9149594423200