# A149303 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 11
4 46
5 174
6 740
7 3109
8 13614
9 59878
10 268728
11 1214032
12 5546558
13 25498422
14 118054700
15 549367029
16 2569472992
17 12066493332
18 56883907318
19 269035738044
20 1276275732442
21 6070582701920
22 28945492531456
23 138319277521604
24 662316708110916
25 3177211680848070
26 15267484859916084
27 73479492803233664