# A249927 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 40
4 485
5 6585
6 95732
7 1457636
8 22947585
9 370494965
10 6101028934
11 102074877086
12 1730213141683
13 29649526507055
14 512810063004600
15 8940267160930408
16 156944360941491106
17 2771866193105829798
18 49218079130561578390
19 878107603236732844610
20 15733529061871743649380