# A121360 (b-file synthesized from sequence entry)
1 2
2 1
3 8
4 14
5 26
6 62
7 134
8 393
9 1257
10 4659
11 9314
12 27933
13 167073
14 334142
15 4677862
16 14033577
17 56134292
18 2133102298
19 11788191218
20 52541651594