# A271217 (b-file synthesized from sequence entry)
0 1
1 2
2 2
3 6
4 22
5 50
6 274
7 598
8 4486
9 9570
10 90914
11 191398
12 2201078
13 4593554
14 62012978
15 128619510
16 1993602406
17 4115824322
18 72026925634
19 148169675590
20 2889308674006