# A161636 (b-file synthesized from sequence entry)
0 1
1 31
2 495
3 5424
4 45848
5 318649
6 1895464
7 9919009
8 46584724
9 199347764
10 786519756
11 2888400232
12 9950014727
13 32360135292
14 99903188872
15 294134516323
16 829176461458
17 2245909515022
18 5862798149046
19 14789460753680
20 36138546144580