# A174796 (b-file synthesized from sequence entry)
1 1
2 2
3 7
4 30
5 143
6 728
7 3148
8 15986
9 86009
10 478907
11 2731365
12 13131703
13 72135374
14 412835191
15 2416852480
16 14369476066
17 72067537808
18 409636973141
19 2412844770335
20 14479410843183
21 87964452906330
22 451313038006432