# A126418 (b-file synthesized from sequence entry)
0 1
1 31
2 149
3 725
4 3543
5 17361
6 85223
7 418899
8 2061105
9 10149405
10 50011235
11 246566635
12 1216199805
13 6001382075
14 29624479933
15 146279954561
16 722500541847
17 3569422111283
18 17638150070523
19 87175432519409
20 430936179702041