# A148591 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 6
4 20
5 57
6 191
7 631
8 2153
9 7593
10 26985
11 98071
12 361345
13 1338423
14 5051312
15 19068103
16 73036222
17 280693079
18 1086439277
19 4235355213
20 16553722376
21 65194738319
22 257295232507
23 1020928712938
24 4064700477810
25 16231276471048
26 65088461541823
27 261496712860419
28 1054565027693888
29 4261322146852943