# A148672 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 7
4 21
5 62
6 201
7 633
8 2039
9 6740
10 22605
11 76638
12 260854
13 899130
14 3106961
15 10801535
16 37807635
17 132935072
18 469231691
19 1660888854
20 5907569428
21 21056698312
22 75251862261
23 269722099238
24 969177576954
25 3490118514190
26 12590156324230
27 45524702976470
28 164856574519094
29 597947942363506
30 2172466763369937