# A217333 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 12
5 29
6 72
7 182
8 466
9 1207
10 3158
11 8334
12 22158
13 59299
14 159614
15 431838
16 1173710
17 3203244
18 8774780
19 24118522
20 66497316
21 183858411
22 509670494
23 1416231616
24 3944027402
25 11006186760
26 30772507128
27 86191006746
28 241815195292
29 679488418879
30 1912123070998