# A047057 (b-file synthesized from sequence entry)
1 0
2 0
3 24
4 192
5 1032
6 5376
7 26688
8 128880
9 605664
10 2802576
11 12755136
12 57525552
13 256574352
14 1137418464
15 5001796944
16 21899428128
17 95296531680
18 413331190896