# A148521 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 5
4 17
5 40
6 133
7 359
8 1205
9 3516
10 12233
11 37178
12 130260
13 409452
14 1451523
15 4699397
16 16810715
17 55338236
18 199009269
19 666159598
20 2410618728
21 8180797010
22 29727470755
23 101876698914
24 371570011482
25 1285650865868
26 4705283364620
27 16410476243304
28 60221005216550
29 211385681809822
30 777637902953035
31 2746296884209249