# A151473 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 49
5 198
6 863
7 3884
8 17975
9 85334
10 412190
11 2024852
12 10077117
13 50742026
14 258072225
15 1324122267
16 6846977215
17 35650800062
18 186783189059
19 984088270530
20 5211141864900
21 27722794111428
22 148106868818943
23 794324000203226
24 4275354972290547
25 23087757785665053
26 125061096159246886
27 679360863935385860