# A108140 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 0
5 4
6 17
7 55
8 161
9 449
10 1220
11 3266
12 8667
13 22879
14 60203
15 158107
16 414728
17 1087064
18 2848061
19 7459703
20 19535229
21 51152749
22 133933964
23 350666854
24 918095255
25 2403665279
26 6292975607
27 16475382935
28 43133369616
29 112925043724