# A091153 (b-file synthesized from sequence entry)
0 1
1 4
2 16
3 67
4 298
5 1414
6 7177
7 39016
8 227074
9 1412233
10 9359110
11 65877178
12 490870183
13 3859788706
14 31935828166
15 277326346945
16 2521757765632
17 23961974750980
18 237491787270343
19 2451092004316246
20 26302725994187392