# A149175 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 10
4 35
5 117
6 429
7 1563
8 6023
9 23289
10 92152
11 369488
12 1502119
13 6160145
14 25528852
15 106682938
16 448960587
17 1901408027
18 8104762740
19 34722538926
20 149465829383
21 646360473228
22 2806706370121
23 12231645222422
24 53492893993153
25 234717283187637
26 1032901850100970
27 4557956790155818
28 20167098103048672