# A030972 (b-file synthesized from sequence entry)
1 1
2 2
3 8
4 35
5 179
6 1074
7 7518
8 60150
9 541353
10 5413533
11 59548868
12 714586417
13 9289623422
14 130054727910
15 1950820918654
16 31213134698477
17 530623289874116
18 9551219217734092
19 181473165136947766
20 3629463302738955334