# A027223 (b-file synthesized from sequence entry)
0 1
1 2
2 11
3 34
4 183
5 630
6 3384
7 12192
8 65536
9 242232
10 1303758
11 4900880
12 26415708
13 100525392
14 542639986
15 2084879028
16 11271483340
17 43645729836
18 236329734438
19 921177944356