# A151523 (b-file synthesized from sequence entry)
1 1
2 2
3 4
4 10
5 20
6 48
7 106
8 252
9 578
10 1372
11 3208
12 7584
13 17850
14 42102
15 99276
16 233716
17 550960
18 1295146
19 3050226
20 7161346
21 16846668
22 39511876
23 92845830