# A294151 (b-file synthesized from sequence entry)
1 1
2 1
3 2
4 3
5 8
6 13
7 36
8 76
9 202
10 482
11 1281
12 3277
13 8749
14 23083
15 62056
16 166498
17 450576
18 1220542
19 3321870
20 9057388
21 24769906