# A333163 (b-file synthesized from sequence entry)
0 1
1 0
2 0
3 1
4 3
5 4
6 12
7 24
8 70
9 172
10 525
11 1530
12 5078
13 16994
14 61456
15 228898
16 895910
17 3617148
18 15130833
19 65084088
20 287828488
21 1304327221
22 6050218591
23 28675928883
24 138730847262
25 684300453848
26 3438439910436
27 17585597712632
28 91479580896616
29 483699938173293
30 2598090378779507