# A149416 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 54
5 184
6 868
7 3270
8 15797
9 62573
10 306060
11 1252011
12 6168402
13 25808068
14 127724851
15 543318743
16 2696792155
17 11618463835
18 57783118598
19 251466517576
20 1252361879418
21 5495032545579
22 27393340026109
23 121016104496380
24 603706939462674
25 2682399778543295
26 13388555204024655
27 59782410913675045