# A209626 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 4
4 10
5 23
6 63
7 155
8 448
9 1152
10 3452
11 9158
12 28177
13 76537
14 240343
15 665073
16 2122968
17 5963685
18 19295541
19 54883588
20 179608831