# A019173 (b-file synthesized from sequence entry)
3 0
4 0
5 5
6 5
7 4
8 24
9 52
10 89
11 268
12 621
13 1355
14 3601
15 8653
16 20765
17 53622
18 135530
19 342373
20 886859
21 2303117
22 5994317
23 15717622
24 41394097
25 109376377
26 289750881
27 769340425
28 2047731396
29 5459013344
30 14573334374
31 38971134055