# A148340 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 5
4 15
5 38
6 126
7 403
8 1279
9 4376
10 15361
11 52102
12 188609
13 680752
14 2450641
15 9089379
16 33719262
17 125430770
18 475968218
19 1796731739
20 6849544648
21 26396870678
22 101253870085
23 392467382251
24 1531000530315
25 5952481787141
26 23368070361558
27 91997443972187
28 361899755511914
29 1434849012341938
30 5692008006992570