# A149041 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 10
4 36
5 137
6 553
7 2285
8 9693
9 41855
10 183561
11 814876
12 3654604
13 16535384
14 75366335
15 345737195
16 1594970323
17 7394406989
18 34431368556
19 160953486204
20 755038939596
21 3553119378943
22 16768513088521
23 79343597203618
24 376326378568765
25 1788822334786162
26 8520094632728376
27 40656455487711977