# A100738 (b-file synthesized from sequence entry)
0 1
1 4
2 24
3 96
4 624
5 2496
6 14976
7 59904
8 390624
9 1562496
10 9374976
11 37499904
12 243749376
13 974997504
14 5849985024
15 23399940096
16 152587890624
17 610351562496
18 3662109374976
19 14648437499904
20 95214843749376
21 380859374997504