# A019230 (b-file synthesized from sequence entry)
3 0
4 0
5 2
6 4
7 4
8 16
9 32
10 81
11 214
12 506
13 1376
14 3393
15 8274
16 22246
17 55106
18 142366
19 370288
20 946740
21 2466300
22 6422117
23 16733982
24 43912796
25 115412210
26 304122477
27 804376850
28 2131389414
29 5661111084
30 15072342561
31 40200636282