# A096227 (b-file synthesized from sequence entry)
1 2
2 8
3 16
4 44
5 96
6 268
7 648
8 1832
9 4784
10 13456
11 36832
12 102944
13 289216
14 804928
15 2292608
16 6365312
17 18257664
18 50626816
19 145731072
20 403833344