# A019120 (b-file synthesized from sequence entry)
3 0
4 0
5 3
6 4
7 6
8 25
9 50
10 85
11 253
12 715
13 1470
14 3595
15 9883
16 23931
17 58627
18 154107
19 394496
20 1002428
21 2607705
22 6801447
23 17692080
24 46356574
25 122062695
26 321690177
27 849981106
28 2253397779
29 5984644093
30 15920044779
31 42441432482