# A047102 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 11
4 37
5 131
6 481
7 1778
8 6637
9 25010
10 94819
11 361275
12 1382507
13 5309449
14 20452432
15 78991548
16 305779341
17 1186056909
18 4608647096
19 17936112649
20 69903546693
21 272788289379
22 1065751393409
23 4168163479770
24 16317475606787