# A007169 (b-file synthesized from sequence entry)
1 0
2 1
3 2
4 8
5 43
6 283
7 1946
8 14010
9 103292
10 776784
11 5931402
12 45870248
13 358501321
14 2827227425
15 22469524972
16 179785568562
17 1447059691048
18 11708296894260
19 95176461591230
20 776935668014674
21 6366225809581766
22 52344041948585714