# A149364 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 44
5 168
6 690
7 2854
8 12137
9 52565
10 230978
11 1027736
12 4618934
13 20940759
14 95652631
15 439609712
16 2032093808
17 9437604683
18 44029824803
19 206186450321
20 969017501835
21 4568147835026
22 21597469460174
23 102372497782333
24 486400762196343
25 2316061651796092
26 11050201383338180
27 52819654295561794