# A355488 (b-file synthesized from sequence entry)
0 0
1 1
2 0
3 2
4 8
5 48
6 328
7 2560
8 22368
9 216224
10 2291456
11 26430336
12 329805952
13 4429255168
14 63730438656
15 978479250944
16 15972310317056
17 276292865550336
18 5049672714569728
19 97245533647568896
20 1968395389124714496
21 41783552069858877440
22 928204423021249003520