# A126374 (b-file synthesized from sequence entry)
0 1
1 20
2 58
3 170
4 500
5 1474
6 4352
7 12864
8 38058
9 112674
10 333776
11 989236
12 2933102
13 8699864
14 25812862
15 76609418
16 227424420
17 675289026
18 2005535520
19 5957318820
20 17698806798
21 52590044172
22 156287402420
23 464515721050
24 1380792800096